31540300537 has 2 divisors, whose sum is σ = 31540300538. Its totient is φ = 31540300536.

The previous prime is 31540300531. The next prime is 31540300567. The reversal of 31540300537 is 73500304513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29792140816 + 1748159721 = 172604^2 + 41811^2 .

It is an emirp because it is prime and its reverse (73500304513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31540300537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31540300499 and 31540300508.

It is not a weakly prime, because it can be changed into another prime (31540300531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15770150268 + 15770150269.

It is an arithmetic number, because the mean of its divisors is an integer number (15770150269).

Almost surely, 2^31540300537 is an apocalyptic number.

It is an amenable number.

31540300537 is a deficient number, since it is larger than the sum of its proper divisors (1).

31540300537 is an equidigital number, since it uses as much as digits as its factorization.

31540300537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 31.

The spelling of 31540300537 in words is "thirty-one billion, five hundred forty million, three hundred thousand, five hundred thirty-seven".