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23253931 = 731132819
BaseRepresentation
bin101100010110…
…1001110101011
31121202102101201
41120231032223
521423111211
62150225031
7401440501
oct130551653
947672351
1023253931
1112143028
127955177
134a8252c
143134671
1520950c1
hex162d3ab

23253931 has 8 divisors (see below), whose sum is σ = 23789520. Its totient is φ = 22724352.

The previous prime is 23253889. The next prime is 23253949. The reversal of 23253931 is 13935232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23253931 is a prime.

It is a super-2 number, since 2×232539312 = 1081490613905522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23253931.

It is not an unprimeable number, because it can be changed into a prime (23253431) 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, 6840 + ... + 9658.

It is an arithmetic number, because the mean of its divisors is an integer number (2973690).

Almost surely, 223253931 is an apocalyptic number.

23253931 is a deficient number, since it is larger than the sum of its proper divisors (535589).

23253931 is a wasteful number, since it uses less digits than its factorization.

23253931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005.

The product of its digits is 4860, while the sum is 28.

The square root of 23253931 is about 4822.2329889793. The cubic root of 23253931 is about 285.4294582104.

The spelling of 23253931 in words is "twenty-three million, two hundred fifty-three thousand, nine hundred thirty-one".

Divisors: 1 73 113 2819 8249 205787 318547 23253931