118211051831 has 2 divisors, whose sum is σ = 118211051832. Its totient is φ = 118211051830.

The previous prime is 118211051801. The next prime is 118211051857. The reversal of 118211051831 is 138150112811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118211051831 is a prime.

It is a super-2 number, since 2×118211051831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118211051801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59105525915 + 59105525916.

It is an arithmetic number, because the mean of its divisors is an integer number (59105525916).

Almost surely, 2^118211051831 is an apocalyptic number.

118211051831 is a deficient number, since it is larger than the sum of its proper divisors (1).

118211051831 is an equidigital number, since it uses as much as digits as its factorization.

118211051831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 32.

The spelling of 118211051831 in words is "one hundred eighteen billion, two hundred eleven million, fifty-one thousand, eight hundred thirty-one".