232131420 has 60 divisors (see below), whose sum is σ = 728209944. Its totient is φ = 61901280.

The previous prime is 232131391. The next prime is 232131437. The reversal of 232131420 is 24131232.

232131420 is a `hidden beast` number, since 232 + 13 + 1 + 420 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 232131393 and 232131402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 70026 + ... + 73265.

Almost surely, 2^232131420 is an apocalyptic number.

232131420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232131420 is an abundant number, since it is smaller than the sum of its proper divisors (496078524).

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

232131420 is a wasteful number, since it uses less digits than its factorization.

232131420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143312 (or 143301 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 232131420 is about 15235.8596738090. The cubic root of 232131420 is about 614.5793673388.

Adding to 232131420 its reverse (24131232), we get a palindrome (256262652).

The spelling of 232131420 in words is "two hundred thirty-two million, one hundred thirty-one thousand, four hundred twenty".