197631087 has 16 divisors (see below), whose sum is σ = 265571328. Its totient is φ = 130727520.

The previous prime is 197631059. The next prime is 197631151. The reversal of 197631087 is 780136791.

It is not a de Polignac number, because 197631087 - 2⁷ = 197630959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197631487) 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, 365037 + ... + 365577.

It is an arithmetic number, because the mean of its divisors is an integer number (16598208).

Almost surely, 2^197631087 is an apocalyptic number.

197631087 is a deficient number, since it is larger than the sum of its proper divisors (67940241).

197631087 is a wasteful number, since it uses less digits than its factorization.

197631087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 197631087 is about 14058.1324150827. The cubic root of 197631087 is about 582.4854566049.

The spelling of 197631087 in words is "one hundred ninety-seven million, six hundred thirty-one thousand, eighty-seven".