30631921197 has 16 divisors (see below), whose sum is σ = 41073341760. Its totient is φ = 20306184192.

The previous prime is 30631921171. The next prime is 30631921247. The reversal of 30631921197 is 79112913603.

It is not a de Polignac number, because 30631921197 - 2⁷ = 30631921069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30631921127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385773 + ... + 458349.

It is an arithmetic number, because the mean of its divisors is an integer number (2567083860).

Almost surely, 2^30631921197 is an apocalyptic number.

It is an amenable number.

30631921197 is a deficient number, since it is larger than the sum of its proper divisors (10441420563).

30631921197 is a wasteful number, since it uses less digits than its factorization.

30631921197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73372.

The product of its (nonzero) digits is 61236, while the sum is 42.

The spelling of 30631921197 in words is "thirty billion, six hundred thirty-one million, nine hundred twenty-one thousand, one hundred ninety-seven".