31378811475 has 96 divisors (see below), whose sum is σ = 58533396480. Its totient is φ = 14695056000.

The previous prime is 31378811411. The next prime is 31378811483. The reversal of 31378811475 is 57411887313.

It is not a de Polignac number, because 31378811475 - 2⁶ = 31378811411 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20126746 + ... + 20128304.

It is an arithmetic number, because the mean of its divisors is an integer number (609722880).

Almost surely, 2^31378811475 is an apocalyptic number.

31378811475 is a deficient number, since it is larger than the sum of its proper divisors (27154585005).

31378811475 is a wasteful number, since it uses less digits than its factorization.

31378811475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401 (or 2396 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The spelling of 31378811475 in words is "thirty-one billion, three hundred seventy-eight million, eight hundred eleven thousand, four hundred seventy-five".