31373034672 has 160 divisors (see below), whose sum is σ = 97154353152. Its totient is φ = 8535739392.

The previous prime is 31373034643. The next prime is 31373034673. The reversal of 31373034672 is 27643037313.

It is a self number, because there is not a number n which added to its sum of digits gives 31373034672.

It is not an unprimeable number, because it can be changed into a prime (31373034673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 557458 + ... + 611150.

Almost surely, 2^31373034672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31373034672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48577176576).

31373034672 is an abundant number, since it is smaller than the sum of its proper divisors (65781318480).

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

31373034672 is a wasteful number, since it uses less digits than its factorization.

31373034672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53795 (or 53789 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 39.

The spelling of 31373034672 in words is "thirty-one billion, three hundred seventy-three million, thirty-four thousand, six hundred seventy-two".