31893479493 has 8 divisors (see below), whose sum is σ = 45026088768. Its totient is φ = 20011594944.

The previous prime is 31893479413. The next prime is 31893479503. The reversal of 31893479493 is 39497439813.

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

It is not a de Polignac number, because 31893479493 - 2¹⁴ = 31893463109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31893479413) 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, 312681121 + ... + 312681222.

It is an arithmetic number, because the mean of its divisors is an integer number (5628261096).

Almost surely, 2^31893479493 is an apocalyptic number.

It is an amenable number.

31893479493 is a deficient number, since it is larger than the sum of its proper divisors (13132609275).

31893479493 is a wasteful number, since it uses less digits than its factorization.

31893479493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625362363.

The product of its digits is 17635968, while the sum is 60.

The spelling of 31893479493 in words is "thirty-one billion, eight hundred ninety-three million, four hundred seventy-nine thousand, four hundred ninety-three".