1377137131 has 2 divisors, whose sum is σ = 1377137132. Its totient is φ = 1377137130.

The previous prime is 1377137129. The next prime is 1377137137. The reversal of 1377137131 is 1317317731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1377137131 - 2¹ = 1377137129 is a prime.

It is a super-2 number, since 2×1377137131² = 3793013355157822322, which contains 22 as substring.

Together with 1377137129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1377137137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688568565 + 688568566.

It is an arithmetic number, because the mean of its divisors is an integer number (688568566).

Almost surely, 2^1377137131 is an apocalyptic number.

1377137131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377137131 is an equidigital number, since it uses as much as digits as its factorization.

1377137131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9261, while the sum is 34.

The square root of 1377137131 is about 37109.7983152698. The cubic root of 1377137131 is about 1112.5658606130.

The spelling of 1377137131 in words is "one billion, three hundred seventy-seven million, one hundred thirty-seven thousand, one hundred thirty-one".