31547970430564 has 81 divisors (see below), whose sum is σ = 65302672945419. Its totient is φ = 13296888218880.

The previous prime is 31547970430547. The next prime is 31547970430597. The reversal of 31547970430564 is 46503407974513.

The square root of 31547970430564 is 5616758.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 214934232100 + 31333036198464 = 463610^2 + 5597592^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31547970430499 and 31547970430508.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4796708044 + ... + 4796714620.

Almost surely, 2^{31547970430564} is an apocalyptic number.

31547970430564 is the 5616758-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31547970430564

31547970430564 is an abundant number, since it is smaller than the sum of its proper divisors (33754702514855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31547970430564 is an frugal number, since it uses more digits than its factorization.

31547970430564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13294 (or 6647 counting only the distinct ones).

The product of its (nonzero) digits is 38102400, while the sum is 58.

The spelling of 31547970430564 in words is "thirty-one trillion, five hundred forty-seven billion, nine hundred seventy million, four hundred thirty thousand, five hundred sixty-four".