31398761135 has 8 divisors (see below), whose sum is σ = 43061158176. Its totient is φ = 21530579040.

The previous prime is 31398761063. The next prime is 31398761137. The reversal of 31398761135 is 53116789313.

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

It is not a de Polignac number, because 31398761135 - 2²⁰ = 31397712559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31398761135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31398761137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448553696 + ... + 448553765.

It is an arithmetic number, because the mean of its divisors is an integer number (5382644772).

Almost surely, 2^31398761135 is an apocalyptic number.

31398761135 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

31398761135 is a deficient number, since it is larger than the sum of its proper divisors (11662397041).

31398761135 is an equidigital number, since it uses as much as digits as its factorization.

31398761135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897107473.

The product of its digits is 408240, while the sum is 47.

The spelling of 31398761135 in words is "thirty-one billion, three hundred ninety-eight million, seven hundred sixty-one thousand, one hundred thirty-five".