23131011 has 16 divisors (see below), whose sum is σ = 31963680. Its totient is φ = 14868480.

The previous prime is 23131001. The next prime is 23131027. The reversal of 23131011 is 11013132.

It is not a de Polignac number, because 23131011 - 2⁵ = 23130979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23131001) 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, 9891 + ... + 12003.

It is an arithmetic number, because the mean of its divisors is an integer number (1997730).

Almost surely, 2^23131011 is an apocalyptic number.

23131011 is a deficient number, since it is larger than the sum of its proper divisors (8832669).

23131011 is a wasteful number, since it uses less digits than its factorization.

23131011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 23131011 is about 4809.4709688281. The cubic root of 23131011 is about 284.9256438833.

Adding to 23131011 its reverse (11013132), we get a palindrome (34144143).

The spelling of 23131011 in words is "twenty-three million, one hundred thirty-one thousand, eleven".