31756045042 has 8 divisors (see below), whose sum is σ = 47909409516. Its totient is φ = 15786241872.

The previous prime is 31756045039. The next prime is 31756045049. The reversal of 31756045042 is 24054065713.

It can be written as a sum of positive squares in 2 ways, for example, as 27935445321 + 3820599721 = 167139^2 + 61811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31756044992 and 31756045010.

It is not an unprimeable number, because it can be changed into a prime (31756045049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45889893 + ... + 45890584.

Almost surely, 2^31756045042 is an apocalyptic number.

31756045042 is a deficient number, since it is larger than the sum of its proper divisors (16153364474).

31756045042 is a wasteful number, since it uses less digits than its factorization.

31756045042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91780652.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 31756045042 in words is "thirty-one billion, seven hundred fifty-six million, forty-five thousand, forty-two".