30972922537 has 2 divisors, whose sum is σ = 30972922538. Its totient is φ = 30972922536.

The previous prime is 30972922531. The next prime is 30972922571. The reversal of 30972922537 is 73522927903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30726934681 + 245987856 = 175291^2 + 15684^2 .

It is an emirp because it is prime and its reverse (73522927903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30972922537 - 2¹⁵ = 30972889769 is a prime.

It is not a weakly prime, because it can be changed into another prime (30972922531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15486461268 + 15486461269.

It is an arithmetic number, because the mean of its divisors is an integer number (15486461269).

Almost surely, 2^30972922537 is an apocalyptic number.

It is an amenable number.

30972922537 is a deficient number, since it is larger than the sum of its proper divisors (1).

30972922537 is an equidigital number, since it uses as much as digits as its factorization.

30972922537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 49.

The spelling of 30972922537 in words is "thirty billion, nine hundred seventy-two million, nine hundred twenty-two thousand, five hundred thirty-seven".