31725602772 has 12 divisors (see below), whose sum is σ = 74026406496. Its totient is φ = 10575200920.

The previous prime is 31725602747. The next prime is 31725602803. The reversal of 31725602772 is 27720652713.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321900104 + ... + 1321900127.

It is an arithmetic number, because the mean of its divisors is an integer number (6168867208).

Almost surely, 2^31725602772 is an apocalyptic number.

It is an amenable number.

31725602772 is an abundant number, since it is smaller than the sum of its proper divisors (42300803724).

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

31725602772 is a wasteful number, since it uses less digits than its factorization.

31725602772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643800238 (or 2643800236 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 42.

The spelling of 31725602772 in words is "thirty-one billion, seven hundred twenty-five million, six hundred two thousand, seven hundred seventy-two".