93971556131 has 2 divisors, whose sum is σ = 93971556132. Its totient is φ = 93971556130.

The previous prime is 93971556121. The next prime is 93971556197. The reversal of 93971556131 is 13165517939.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 93971556131 - 2¹⁰ = 93971555107 is a prime.

It is a super-2 number, since 2×93971556131² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 93971556131.

It is not a weakly prime, because it can be changed into another prime (93971556121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46985778065 + 46985778066.

It is an arithmetic number, because the mean of its divisors is an integer number (46985778066).

Almost surely, 2^93971556131 is an apocalyptic number.

93971556131 is a deficient number, since it is larger than the sum of its proper divisors (1).

93971556131 is an equidigital number, since it uses as much as digits as its factorization.

93971556131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 765450, while the sum is 50.

The spelling of 93971556131 in words is "ninety-three billion, nine hundred seventy-one million, five hundred fifty-six thousand, one hundred thirty-one".