31378113530 has 16 divisors (see below), whose sum is σ = 56502808200. Its totient is φ = 12546311232.

The previous prime is 31378113523. The next prime is 31378113581. The reversal of 31378113530 is 3531187313.

It can be written as a sum of positive squares in 4 ways, for example, as 23340811729 + 8037301801 = 152777^2 + 89651^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 590009 + ... + 640988.

Almost surely, 2^31378113530 is an apocalyptic number.

31378113530 is a deficient number, since it is larger than the sum of its proper divisors (25124694670).

31378113530 is a wasteful number, since it uses less digits than its factorization.

31378113530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233553.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 31378113530 in words is "thirty-one billion, three hundred seventy-eight million, one hundred thirteen thousand, five hundred thirty".