421615316331 has 24 divisors (see below), whose sum is σ = 664498059264. Its totient is φ = 255472691760.

The previous prime is 421615316327. The next prime is 421615316377. The reversal of 421615316331 is 133613516124.

421615316331 is a `hidden beast` number, since 4 + 2 + 1 + 6 + 1 + 5 + 316 + 331 = 666.

It is not a de Polignac number, because 421615316331 - 2² = 421615316327 is a prime.

It is a super-2 number, since 2×421615316331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421615316131) 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, 63030 + ... + 920436.

It is an arithmetic number, because the mean of its divisors is an integer number (27687419136).

Almost surely, 2^421615316331 is an apocalyptic number.

421615316331 is a deficient number, since it is larger than the sum of its proper divisors (242882742933).

421615316331 is a wasteful number, since it uses less digits than its factorization.

421615316331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862391 (or 862388 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The spelling of 421615316331 in words is "four hundred twenty-one billion, six hundred fifteen million, three hundred sixteen thousand, three hundred thirty-one".