1377113731 has 4 divisors (see below), whose sum is σ = 1573844272. Its totient is φ = 1180383192.

The previous prime is 1377113729. The next prime is 1377113737. The reversal of 1377113731 is 1373117731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1377113731 - 2¹ = 1377113729 is a prime.

It is a super-2 number, since 2×1377113731² = 3792884456217480722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1377113737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98365260 + ... + 98365273.

It is an arithmetic number, because the mean of its divisors is an integer number (393461068).

Almost surely, 2^1377113731 is an apocalyptic number.

1377113731 is a deficient number, since it is larger than the sum of its proper divisors (196730541).

1377113731 is an equidigital number, since it uses as much as digits as its factorization.

1377113731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196730540.

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

The square root of 1377113731 is about 37109.4830333164. The cubic root of 1377113731 is about 1112.5595590889.

The spelling of 1377113731 in words is "one billion, three hundred seventy-seven million, one hundred thirteen thousand, seven hundred thirty-one".