23131022 has 16 divisors (see below), whose sum is σ = 35952000. Its totient is φ = 11149920.

The previous prime is 23131001. The next prime is 23131027. The reversal of 23131022 is 22013132.

It is a happy number.

It is a super-4 number, since 4×23131022⁴ (a number of 31 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23130988 and 23131006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21104 + ... + 22172.

It is an arithmetic number, because the mean of its divisors is an integer number (2247000).

Almost surely, 2^23131022 is an apocalyptic number.

23131022 is a deficient number, since it is larger than the sum of its proper divisors (12820978).

23131022 is a wasteful number, since it uses less digits than its factorization.

23131022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23131022 is about 4809.4721124049. The cubic root of 23131022 is about 284.9256890489.

Adding to 23131022 its reverse (22013132), we get a palindrome (45144154).

The spelling of 23131022 in words is "twenty-three million, one hundred thirty-one thousand, twenty-two".