231899052 has 96 divisors (see below), whose sum is σ = 680891904. Its totient is φ = 59673600.

The previous prime is 231899033. The next prime is 231899053. The reversal of 231899052 is 250998132.

It is a self number, because there is not a number n which added to its sum of digits gives 231899052.

It is not an unprimeable number, because it can be changed into a prime (231899053) 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, 103302 + ... + 105522.

It is an arithmetic number, because the mean of its divisors is an integer number (7092624).

Almost surely, 2^231899052 is an apocalyptic number.

231899052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231899052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340445952).

231899052 is an abundant number, since it is smaller than the sum of its proper divisors (448992852).

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

231899052 is a wasteful number, since it uses less digits than its factorization.

231899052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 231899052 is about 15228.2320707297. The cubic root of 231899052 is about 614.3742303000.

The spelling of 231899052 in words is "two hundred thirty-one million, eight hundred ninety-nine thousand, fifty-two".