23131012 has 6 divisors (see below), whose sum is σ = 40479278. Its totient is φ = 11565504.

The previous prime is 23131001. The next prime is 23131027. The reversal of 23131012 is 21013132.

It can be written as a sum of positive squares in only one way, i.e., 15808576 + 7322436 = 3976^2 + 2706^2 .

It is a super-2 number, since 2×23131012² = 1070087432288288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23130983 and 23131001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2891373 + ... + 2891380.

Almost surely, 2^23131012 is an apocalyptic number.

It is an amenable number.

23131012 is a deficient number, since it is larger than the sum of its proper divisors (17348266).

23131012 is a wasteful number, since it uses less digits than its factorization.

23131012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5782757 (or 5782755 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 23131012 is about 4809.4710727896. The cubic root of 23131012 is about 284.9256479893.

Adding to 23131012 its reverse (21013132), we get a palindrome (44144144).

The spelling of 23131012 in words is "twenty-three million, one hundred thirty-one thousand, twelve".