231402052 has 24 divisors (see below), whose sum is σ = 467135424. Its totient is φ = 98244192.

The previous prime is 231402037. The next prime is 231402053. The reversal of 231402052 is 250204132.

231402052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231402053) 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, 35623 + ... + 41614.

It is an arithmetic number, because the mean of its divisors is an integer number (19463976).

Almost surely, 2^231402052 is an apocalyptic number.

It is an amenable number.

231402052 is an abundant number, since it is smaller than the sum of its proper divisors (235733372).

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

231402052 is a wasteful number, since it uses less digits than its factorization.

231402052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77355 (or 77353 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 231402052 is about 15211.9049431687. The cubic root of 231402052 is about 613.9350127684.

Adding to 231402052 its reverse (250204132), we get a palindrome (481606184).

The spelling of 231402052 in words is "two hundred thirty-one million, four hundred two thousand, fifty-two".