2131511927 has 2 divisors, whose sum is σ = 2131511928. Its totient is φ = 2131511926.

The previous prime is 2131511917. The next prime is 2131512007. The reversal of 2131511927 is 7291151312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131511927 - 2²⁰ = 2130463351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131511893 and 2131511902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131511917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065755963 + 1065755964.

It is an arithmetic number, because the mean of its divisors is an integer number (1065755964).

Almost surely, 2^2131511927 is an apocalyptic number.

2131511927 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131511927 is an equidigital number, since it uses as much as digits as its factorization.

2131511927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 32.

The square root of 2131511927 is about 46168.3000228512. The cubic root of 2131511927 is about 1286.9527108927.

The spelling of 2131511927 in words is "two billion, one hundred thirty-one million, five hundred eleven thousand, nine hundred twenty-seven".