31999929295104 has 81 divisors (see below), whose sum is σ = 92264467920079. Its totient is φ = 10666552588800.

The previous prime is 31999929295097. The next prime is 31999929295109. The reversal of 31999929295104 is 40159292999913.

The square root of 31999929295104 is 5656848.

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

31999929295104 is a `hidden beast` number, since 3 + 19 + 9 + 9 + 9 + 2 + 92 + 9 + 510 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31999929295109) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 271469779 + ... + 271587629.

Almost surely, 2^{31999929295104} is an apocalyptic number.

31999929295104 is the 5656848-th square number.

It is an amenable number.

31999929295104 is an abundant number, since it is smaller than the sum of its proper divisors (60264538624975).

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

31999929295104 is an frugal number, since it uses more digits than its factorization.

31999929295104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235724 (or 117856 counting only the distinct ones).

The product of its (nonzero) digits is 127545840, while the sum is 72.

The spelling of 31999929295104 in words is "thirty-one trillion, nine hundred ninety-nine billion, nine hundred twenty-nine million, two hundred ninety-five thousand, one hundred four".