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23331131293 = 71328607483
BaseRepresentation
bin10101101110101001…
…001100111110011101
32020012222122021022211
4111232221030332131
5340240232200133
614415043040421
71454111225641
oct255651147635
966188567284
1023331131293
1199928a7298
124631670111
13227a869b42
1411b4886c21
1591841cbcd
hex56ea4cf9d

23331131293 has 4 divisors (see below), whose sum is σ = 23659738848. Its totient is φ = 23002523740.

The previous prime is 23331131287. The next prime is 23331131323. The reversal of 23331131293 is 39213113332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23331131293 is a prime.

It is a super-2 number, since 2×233311312932 (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 (23331131273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164303671 + ... + 164303812.

It is an arithmetic number, because the mean of its divisors is an integer number (5914934712).

Almost surely, 223331131293 is an apocalyptic number.

It is an amenable number.

23331131293 is a deficient number, since it is larger than the sum of its proper divisors (328607555).

23331131293 is an equidigital number, since it uses as much as digits as its factorization.

23331131293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328607554.

The product of its digits is 8748, while the sum is 31.

The spelling of 23331131293 in words is "twenty-three billion, three hundred thirty-one million, one hundred thirty-one thousand, two hundred ninety-three".

Divisors: 1 71 328607483 23331131293