231402474 has 32 divisors (see below), whose sum is σ = 517944000. Its totient is φ = 76576752.

The previous prime is 231402473. The next prime is 231402497. The reversal of 231402474 is 474204132.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231402473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7909 + ... + 22920.

It is an arithmetic number, because the mean of its divisors is an integer number (16185750).

Almost surely, 2^231402474 is an apocalyptic number.

231402474 is an abundant number, since it is smaller than the sum of its proper divisors (286541526).

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

231402474 is a wasteful number, since it uses less digits than its factorization.

231402474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30979 (or 30973 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 231402474 is about 15211.9188138775. The cubic root of 231402474 is about 613.9353859722.

The spelling of 231402474 in words is "two hundred thirty-one million, four hundred two thousand, four hundred seventy-four".