12431017972 has 6 divisors (see below), whose sum is σ = 21754281458. Its totient is φ = 6215508984.

The previous prime is 12431017901. The next prime is 12431017981. The reversal of 12431017972 is 27971013421.

It can be written as a sum of positive squares in only one way, i.e., 12105720676 + 325297296 = 110026^2 + 18036^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1553877243 + ... + 1553877250.

Almost surely, 2^12431017972 is an apocalyptic number.

It is an amenable number.

12431017972 is a deficient number, since it is larger than the sum of its proper divisors (9323263486).

12431017972 is a wasteful number, since it uses less digits than its factorization.

12431017972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107754497 (or 3107754495 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 12431017972 in words is "twelve billion, four hundred thirty-one million, seventeen thousand, nine hundred seventy-two".