1375312135731 has 32 divisors (see below), whose sum is σ = 2010353702400. Its totient is φ = 833238524160.

The previous prime is 1375312135727. The next prime is 1375312135733.

It is a happy number.

1375312135731 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1375312135731 - 2² = 1375312135727 is a prime.

It is a super-2 number, since 2×1375312135731² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1375312135733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4442626 + ... + 4742103.

It is an arithmetic number, because the mean of its divisors is an integer number (62823553200).

Almost surely, 2^{1375312135731} is an apocalyptic number.

1375312135731 is a deficient number, since it is larger than the sum of its proper divisors (635041566669).

1375312135731 is a wasteful number, since it uses less digits than its factorization.

1375312135731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9184859.

The product of its digits is 198450, while the sum is 42.

The spelling of 1375312135731 in words is "one trillion, three hundred seventy-five billion, three hundred twelve million, one hundred thirty-five thousand, seven hundred thirty-one".