6131154961 has 2 divisors, whose sum is σ = 6131154962. Its totient is φ = 6131154960.

The previous prime is 6131154947. The next prime is 6131155033. The reversal of 6131154961 is 1694511316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6127914961 + 3240000 = 78281^2 + 1800^2 .

It is a cyclic number.

It is not a de Polignac number, because 6131154961 - 2⁵ = 6131154929 is a prime.

It is a super-2 number, since 2×6131154961² = 75182122311589823042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6131154961.

It is not a weakly prime, because it can be changed into another prime (6131154901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3065577480 + 3065577481.

It is an arithmetic number, because the mean of its divisors is an integer number (3065577481).

Almost surely, 2^6131154961 is an apocalyptic number.

It is an amenable number.

6131154961 is a deficient number, since it is larger than the sum of its proper divisors (1).

6131154961 is an equidigital number, since it uses as much as digits as its factorization.

6131154961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 6131154961 is about 78301.6919421286. The cubic root of 6131154961 is about 1830.2655174275.

The spelling of 6131154961 in words is "six billion, one hundred thirty-one million, one hundred fifty-four thousand, nine hundred sixty-one".