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23331031120 = 245614780949
BaseRepresentation
bin10101101110101000…
…110100100001010000
32020012222110011220201
4111232220310201100
5340240220443440
614415040544544
71454110330615
oct255650644120
966188404821
1023331031120
119992839001
124631622154
13227a833377
1411b485c50c
159183ed19a
hex56ea34850

23331031120 has 40 divisors (see below), whose sum is σ = 55133915400. Its totient is φ = 9179420160.

The previous prime is 23331031109. The next prime is 23331031127. The reversal of 23331031120 is 2113013332.

It can be written as a sum of positive squares in 4 ways, for example, as 3128388624 + 20202642496 = 55932^2 + 142136^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23331031127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2385595 + ... + 2395354.

It is an arithmetic number, because the mean of its divisors is an integer number (1378347885).

Almost surely, 223331031120 is an apocalyptic number.

23331031120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23331031120 is an abundant number, since it is smaller than the sum of its proper divisors (31802884280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23331031120 is a wasteful number, since it uses less digits than its factorization.

23331031120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4781023 (or 4781017 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 23331031120 its reverse (2113013332), we get a palindrome (25444044452).

The spelling of 23331031120 in words is "twenty-three billion, three hundred thirty-one million, thirty-one thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 61 80 122 244 305 488 610 976 1220 2440 4880 4780949 9561898 19123796 23904745 38247592 47809490 76495184 95618980 191237960 291637889 382475920 583275778 1166551556 1458189445 2333103112 2916378890 4666206224 5832757780 11665515560 23331031120