31974700197 has 32 divisors (see below), whose sum is σ = 47611593216. Its totient is φ = 18919454400.

The previous prime is 31974700187. The next prime is 31974700213. The reversal of 31974700197 is 79100747913.

It is not a de Polignac number, because 31974700197 - 2⁴ = 31974700181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31974700117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4711947 + ... + 4718727.

It is an arithmetic number, because the mean of its divisors is an integer number (1487862288).

Almost surely, 2^31974700197 is an apocalyptic number.

It is an amenable number.

31974700197 is a deficient number, since it is larger than the sum of its proper divisors (15636893019).

31974700197 is a wasteful number, since it uses less digits than its factorization.

31974700197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10161.

The product of its (nonzero) digits is 333396, while the sum is 48.

The spelling of 31974700197 in words is "thirty-one billion, nine hundred seventy-four million, seven hundred thousand, one hundred ninety-seven".