31542530445 has 12 divisors (see below), whose sum is σ = 54673719516. Its totient is φ = 16822682880.

The previous prime is 31542530419. The next prime is 31542530449. The reversal of 31542530445 is 54403524513.

31542530445 is a `hidden beast` number, since 31 + 54 + 2 + 530 + 4 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5561281476 + 25981248969 = 74574^2 + 161187^2 .

It is not a de Polignac number, because 31542530445 - 2⁸ = 31542530189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31542530449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350472516 + ... + 350472605.

It is an arithmetic number, because the mean of its divisors is an integer number (4556143293).

Almost surely, 2^31542530445 is an apocalyptic number.

It is an amenable number.

31542530445 is a deficient number, since it is larger than the sum of its proper divisors (23131189071).

31542530445 is a wasteful number, since it uses less digits than its factorization.

31542530445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700945132 (or 700945129 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 31542530445 in words is "thirty-one billion, five hundred forty-two million, five hundred thirty thousand, four hundred forty-five".