231400052 has 24 divisors (see below), whose sum is σ = 438378696. Its totient is φ = 106242048.

The previous prime is 231400049. The next prime is 231400061. The reversal of 231400052 is 250004132.

It can be written as a sum of positive squares in 4 ways, for example, as 27081616 + 204318436 = 5204^2 + 14294^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231400052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493 + ... + 21564.

It is an arithmetic number, because the mean of its divisors is an integer number (18265779).

Almost surely, 2^231400052 is an apocalyptic number.

It is an amenable number.

231400052 is a deficient number, since it is larger than the sum of its proper divisors (206978644).

231400052 is a wasteful number, since it uses less digits than its factorization.

231400052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23267 (or 23265 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 231400052 is about 15211.8392050403. The cubic root of 231400052 is about 613.9332440235.

Adding to 231400052 its reverse (250004132), we get a palindrome (481404184).

The spelling of 231400052 in words is "two hundred thirty-one million, four hundred thousand, fifty-two".