231612052 has 96 divisors (see below), whose sum is σ = 509644800. Its totient is φ = 89900928.

The previous prime is 231612013. The next prime is 231612053. The reversal of 231612052 is 250216132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231612053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1475158 + ... + 1475314.

It is an arithmetic number, because the mean of its divisors is an integer number (5308800).

Almost surely, 2^231612052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231612052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254822400).

231612052 is an abundant number, since it is smaller than the sum of its proper divisors (278032748).

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

231612052 is a wasteful number, since it uses less digits than its factorization.

231612052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 231612052 is about 15218.8058664272. The cubic root of 231612052 is about 614.1206742905.

Adding to 231612052 its reverse (250216132), we get a palindrome (481828184).

The spelling of 231612052 in words is "two hundred thirty-one million, six hundred twelve thousand, fifty-two".