30986650957 has 2 divisors, whose sum is σ = 30986650958. Its totient is φ = 30986650956.

The previous prime is 30986650931. The next prime is 30986650963. The reversal of 30986650957 is 75905668903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25572487396 + 5414163561 = 159914^2 + 73581^2 .

It is a cyclic number.

It is not a de Polignac number, because 30986650957 - 2¹⁹ = 30986126669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30986650967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15493325478 + 15493325479.

It is an arithmetic number, because the mean of its divisors is an integer number (15493325479).

Almost surely, 2^30986650957 is an apocalyptic number.

It is an amenable number.

30986650957 is a deficient number, since it is larger than the sum of its proper divisors (1).

30986650957 is an equidigital number, since it uses as much as digits as its factorization.

30986650957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12247200, while the sum is 58.

The spelling of 30986650957 in words is "thirty billion, nine hundred eighty-six million, six hundred fifty thousand, nine hundred fifty-seven".