31139543296 has 81 divisors (see below), whose sum is σ = 63948181843. Its totient is φ = 15133552640.

The previous prime is 31139543273. The next prime is 31139543299. The reversal of 31139543296 is 69234593113.

The square root of 31139543296 is 176464.

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 24480983296 + 6658560000 = 156464^2 + 81600^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31139543299) 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 8 ways as a sum of consecutive naturals, for example, 115760250 + ... + 115760518.

Almost surely, 2^31139543296 is an apocalyptic number.

31139543296 is the 176464-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31139543296

31139543296 is an abundant number, since it is smaller than the sum of its proper divisors (32808638547).

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

31139543296 is an frugal number, since it uses more digits than its factorization.

31139543296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 312 counting only the distinct ones).

The product of its digits is 524880, while the sum is 46.

The spelling of 31139543296 in words is "thirty-one billion, one hundred thirty-nine million, five hundred forty-three thousand, two hundred ninety-six".