1375361731 has 2 divisors, whose sum is σ = 1375361732. Its totient is φ = 1375361730.

The previous prime is 1375361723. The next prime is 1375361737. The reversal of 1375361731 is 1371635731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1375361731 - 2³ = 1375361723 is a prime.

It is a super-2 number, since 2×1375361731² = 3783239782198632722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1375361737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687680865 + 687680866.

It is an arithmetic number, because the mean of its divisors is an integer number (687680866).

Almost surely, 2^1375361731 is an apocalyptic number.

1375361731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375361731 is an equidigital number, since it uses as much as digits as its factorization.

1375361731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39690, while the sum is 37.

The square root of 1375361731 is about 37085.8696945346. The cubic root of 1375361731 is about 1112.0875497702.

The spelling of 1375361731 in words is "one billion, three hundred seventy-five million, three hundred sixty-one thousand, seven hundred thirty-one".