197149631 has 16 divisors (see below), whose sum is σ = 232187904. Its totient is φ = 163895424.

The previous prime is 197149609. The next prime is 197149639. The reversal of 197149631 is 136941791.

It is not a de Polignac number, because 197149631 - 2¹⁰ = 197148607 is a prime.

It is a super-2 number, since 2×197149631² = 77735954006872322, which 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 (197149639) 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, 34526 + ... + 39828.

It is an arithmetic number, because the mean of its divisors is an integer number (14511744).

Almost surely, 2^197149631 is an apocalyptic number.

197149631 is a deficient number, since it is larger than the sum of its proper divisors (35038273).

197149631 is a wasteful number, since it uses less digits than its factorization.

197149631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470.

The product of its digits is 40824, while the sum is 41.

The square root of 197149631 is about 14040.9982194999. The cubic root of 197149631 is about 582.0120675887.

The spelling of 197149631 in words is "one hundred ninety-seven million, one hundred forty-nine thousand, six hundred thirty-one".