31725068677 has 4 divisors (see below), whose sum is σ = 31825148076. Its totient is φ = 31624989280.

The previous prime is 31725068651. The next prime is 31725068689. The reversal of 31725068677 is 77686052713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77686052713 = 116867 ⋅664739.

It can be written as a sum of positive squares in 2 ways, for example, as 14265674721 + 17459393956 = 119439^2 + 132134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31725068677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31725068477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50039224 + ... + 50039857.

It is an arithmetic number, because the mean of its divisors is an integer number (7956287019).

Almost surely, 2^31725068677 is an apocalyptic number.

It is an amenable number.

31725068677 is a deficient number, since it is larger than the sum of its proper divisors (100079399).

31725068677 is a wasteful number, since it uses less digits than its factorization.

31725068677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100079398.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 31725068677 in words is "thirty-one billion, seven hundred twenty-five million, sixty-eight thousand, six hundred seventy-seven".