231402032 has 40 divisors (see below), whose sum is σ = 462157920. Its totient is φ = 112171520.

The previous prime is 231402019. The next prime is 231402037. The reversal of 231402032 is 230204132.

231402032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231402032.

It is not an unprimeable number, because it can be changed into a prime (231402037) 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, 112469 + ... + 114507.

It is an arithmetic number, because the mean of its divisors is an integer number (11553948).

Almost surely, 2^231402032 is an apocalyptic number.

It is an amenable number.

231402032 is a deficient number, since it is larger than the sum of its proper divisors (230755888).

231402032 is a wasteful number, since it uses less digits than its factorization.

231402032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 231402032 is about 15211.9042857888. The cubic root of 231402032 is about 613.9349950810.

Adding to 231402032 its reverse (230204132), we get a palindrome (461606164).

The spelling of 231402032 in words is "two hundred thirty-one million, four hundred two thousand, thirty-two".