31393249079 has 8 divisors (see below), whose sum is σ = 32812154880. Its totient is φ = 29978841816.

The previous prime is 31393249051. The next prime is 31393249091. The reversal of 31393249079 is 97094239313.

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

It is a cyclic number.

It is not a de Polignac number, because 31393249079 - 2²⁰ = 31392200503 is a prime.

It is a super-2 number, since 2×31393249079² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31393249039) 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, 1110359 + ... + 1138280.

It is an arithmetic number, because the mean of its divisors is an integer number (4101519360).

Almost surely, 2^31393249079 is an apocalyptic number.

31393249079 is a deficient number, since it is larger than the sum of its proper divisors (1418905801).

31393249079 is a wasteful number, since it uses less digits than its factorization.

31393249079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249269.

The product of its (nonzero) digits is 1102248, while the sum is 50.

The spelling of 31393249079 in words is "thirty-one billion, three hundred ninety-three million, two hundred forty-nine thousand, seventy-nine".