23123631 has 16 divisors (see below), whose sum is σ = 32443488. Its totient is φ = 14630400.

The previous prime is 23123563. The next prime is 23123657. The reversal of 23123631 is 13632132.

It is not a de Polignac number, because 23123631 - 2¹⁰ = 23122607 is a prime.

It is a super-2 number, since 2×23123631² = 1069404621248322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23123598 and 23123607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2011 + ... + 7091.

It is an arithmetic number, because the mean of its divisors is an integer number (2027718).

Almost surely, 2^23123631 is an apocalyptic number.

23123631 is a deficient number, since it is larger than the sum of its proper divisors (9319857).

23123631 is a wasteful number, since it uses less digits than its factorization.

23123631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162.

The product of its digits is 648, while the sum is 21.

The square root of 23123631 is about 4808.7036714691. The cubic root of 23123631 is about 284.8953386087.

Adding to 23123631 its reverse (13632132), we get a palindrome (36755763).

The spelling of 23123631 in words is "twenty-three million, one hundred twenty-three thousand, six hundred thirty-one".