231562420 has 24 divisors (see below), whose sum is σ = 496629504. Its totient is φ = 90653856.

The previous prime is 231562381. The next prime is 231562427. The reversal of 231562420 is 24265132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231562427) 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, 122232 + ... + 124111.

It is an arithmetic number, because the mean of its divisors is an integer number (20692896).

Almost surely, 2^231562420 is an apocalyptic number.

231562420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231562420 is an abundant number, since it is smaller than the sum of its proper divisors (265067084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231562420 is a wasteful number, since it uses less digits than its factorization.

231562420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246399 (or 246397 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 231562420 is about 15217.1751649247. The cubic root of 231562420 is about 614.0768046466.

The spelling of 231562420 in words is "two hundred thirty-one million, five hundred sixty-two thousand, four hundred twenty".