423197631 has 24 divisors (see below), whose sum is σ = 638816256. Its totient is φ = 269462160.

The previous prime is 423197629. The next prime is 423197641. The reversal of 423197631 is 136791324.

423197631 is a `hidden beast` number, since 4 + 2 + 3 + 19 + 7 + 631 = 666.

It is not a de Polignac number, because 423197631 - 2¹ = 423197629 is a prime.

It is a super-2 number, since 2×423197631² = 358192469768024322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423197611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204106 + ... + 206168.

It is an arithmetic number, because the mean of its divisors is an integer number (26617344).

Almost surely, 2^423197631 is an apocalyptic number.

423197631 is a deficient number, since it is larger than the sum of its proper divisors (215618625).

423197631 is a wasteful number, since it uses less digits than its factorization.

423197631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083 (or 3080 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 423197631 is about 20571.7678141671. The cubic root of 423197631 is about 750.7829636727.

The spelling of 423197631 in words is "four hundred twenty-three million, one hundred ninety-seven thousand, six hundred thirty-one".