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23321131231 = 294211910159
BaseRepresentation
bin10101101110000011…
…000011100011011111
32020012021211012211011
4111232003003203133
5340230202144411
614414044440051
71453630226146
oct255603034337
966167735734
1023321131231
119988197082
12462a249027
132278778248
1411b340275d
159175e4c21
hex56e0c38df

23321131231 has 8 divisors (see below), whose sum is σ = 24182625600. Its totient is φ = 22463458080.

The previous prime is 23321131219. The next prime is 23321131291. The reversal of 23321131231 is 13213112332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23321131231 - 27 = 23321131103 is a prime.

It is a super-2 number, since 2×233211312312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23321131291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 942871 + ... + 967288.

It is an arithmetic number, because the mean of its divisors is an integer number (3022828200).

Almost surely, 223321131231 is an apocalyptic number.

23321131231 is a deficient number, since it is larger than the sum of its proper divisors (861494369).

23321131231 is a wasteful number, since it uses less digits than its factorization.

23321131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910609.

The product of its digits is 648, while the sum is 22.

Adding to 23321131231 its reverse (13213112332), we get a palindrome (36534243563).

The spelling of 23321131231 in words is "twenty-three billion, three hundred twenty-one million, one hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 29 421 12209 1910159 55394611 804176939 23321131231