1375137631 has 8 divisors (see below), whose sum is σ = 1625778720. Its totient is φ = 1138044768.

The previous prime is 1375137613. The next prime is 1375137641. The reversal of 1375137631 is 1367315731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1375137631 - 2¹⁷ = 1375006559 is a prime.

It is a super-2 number, since 2×1375137631² = 3782007008384584322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375137611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3386836 + ... + 3387241.

It is an arithmetic number, because the mean of its divisors is an integer number (203222340).

Almost surely, 2^1375137631 is an apocalyptic number.

1375137631 is a deficient number, since it is larger than the sum of its proper divisors (250641089).

1375137631 is an equidigital number, since it uses as much as digits as its factorization.

1375137631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774113.

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

The square root of 1375137631 is about 37082.8482050664. The cubic root of 1375137631 is about 1112.0271456958.

The spelling of 1375137631 in words is "one billion, three hundred seventy-five million, one hundred thirty-seven thousand, six hundred thirty-one".