231113725 has 12 divisors (see below), whose sum is σ = 303439284. Its totient is φ = 174014720.

The previous prime is 231113719. The next prime is 231113747. The reversal of 231113725 is 527311132.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 20457529 + 210656196 = 4523^2 + 14514^2 .

It is not a de Polignac number, because 231113725 - 2¹⁵ = 231080957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231113725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 271474 + ... + 272323.

It is an arithmetic number, because the mean of its divisors is an integer number (25286607).

Almost surely, 2^231113725 is an apocalyptic number.

231113725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231113725 is a deficient number, since it is larger than the sum of its proper divisors (72325559).

231113725 is a wasteful number, since it uses less digits than its factorization.

231113725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543824 (or 543819 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 231113725 is about 15202.4249710367. The cubic root of 231113725 is about 613.6799190766.

Adding to 231113725 its reverse (527311132), we get a palindrome (758424857).

The spelling of 231113725 in words is "two hundred thirty-one million, one hundred thirteen thousand, seven hundred twenty-five".