31393462097 has 8 divisors (see below), whose sum is σ = 33244303176. Its totient is φ = 29543084032.

The previous prime is 31393462073. The next prime is 31393462117. The reversal of 31393462097 is 79026439313.

It can be written as a sum of positive squares in 4 ways, for example, as 18669396496 + 12724065601 = 136636^2 + 112801^2 .

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 31393462097 - 2⁶ = 31393462033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31393462697) 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, 29033 + ... + 252249.

It is an arithmetic number, because the mean of its divisors is an integer number (4155537897).

Almost surely, 2^31393462097 is an apocalyptic number.

It is an amenable number.

31393462097 is a deficient number, since it is larger than the sum of its proper divisors (1850841079).

31393462097 is a wasteful number, since it uses less digits than its factorization.

31393462097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231507.

The product of its (nonzero) digits is 734832, while the sum is 47.

The spelling of 31393462097 in words is "thirty-one billion, three hundred ninety-three million, four hundred sixty-two thousand, ninety-seven".