197992431 has 40 divisors (see below), whose sum is σ = 364033824. Its totient is φ = 104431680.

The previous prime is 197992429. The next prime is 197992453. The reversal of 197992431 is 134299791.

It is not a de Polignac number, because 197992431 - 2¹ = 197992429 is a prime.

It is a super-2 number, since 2×197992431² = 78402005466579522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197992481) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6060 + ... + 20801.

Almost surely, 2^197992431 is an apocalyptic number.

197992431 is a deficient number, since it is larger than the sum of its proper divisors (166041393).

197992431 is a wasteful number, since it uses less digits than its factorization.

197992431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26893 (or 26884 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 197992431 is about 14070.9783241962. The cubic root of 197992431 is about 582.8402413382.

The spelling of 197992431 in words is "one hundred ninety-seven million, nine hundred ninety-two thousand, four hundred thirty-one".