31263452839538 has 4 divisors (see below), whose sum is σ = 46895179259310. Its totient is φ = 15631726419768.

The previous prime is 31263452839513. The next prime is 31263452839571. The reversal of 31263452839538 is 83593825436213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28661964493969 + 2601488345569 = 5353687^2 + 1612913^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7815863209883 + ... + 7815863209886.

Almost surely, 2^{31263452839538} is an apocalyptic number.

31263452839538 is a deficient number, since it is larger than the sum of its proper divisors (15631726419772).

31263452839538 is a wasteful number, since it uses less digits than its factorization.

31263452839538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15631726419771.

The product of its digits is 111974400, while the sum is 62.

The spelling of 31263452839538 in words is "thirty-one trillion, two hundred sixty-three billion, four hundred fifty-two million, eight hundred thirty-nine thousand, five hundred thirty-eight".