423401631 has 8 divisors (see below), whose sum is σ = 565432704. Its totient is φ = 281819160.

The previous prime is 423401623. The next prime is 423401647. The reversal of 423401631 is 136104324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423401631 - 2³ = 423401623 is a prime.

It is a super-2 number, since 2×423401631² = 358537882266920322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423401731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109941 + ... + 113726.

It is an arithmetic number, because the mean of its divisors is an integer number (70679088).

Almost surely, 2^423401631 is an apocalyptic number.

423401631 is a deficient number, since it is larger than the sum of its proper divisors (142031073).

423401631 is a wasteful number, since it uses less digits than its factorization.

423401631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224301.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 423401631 is about 20576.7254683538. The cubic root of 423401631 is about 750.9035811731.

Adding to 423401631 its reverse (136104324), we get a palindrome (559505955).

The spelling of 423401631 in words is "four hundred twenty-three million, four hundred one thousand, six hundred thirty-one".