231413725 has 24 divisors (see below), whose sum is σ = 297746568. Its totient is φ = 178272000.

The previous prime is 231413719. The next prime is 231413731. The reversal of 231413725 is 527314132.

It is an interprime number because it is at equal distance from previous prime (231413719) and next prime (231413731).

It can be written as a sum of positive squares in 12 ways, for example, as 39204 + 231374521 = 198^2 + 15211^2 .

It is a de Polignac number, because none of the positive numbers 2^k-231413725 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231413693 and 231413702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92187 + ... + 94663.

It is an arithmetic number, because the mean of its divisors is an integer number (12406107).

Almost surely, 2^231413725 is an apocalyptic number.

231413725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231413725 is a deficient number, since it is larger than the sum of its proper divisors (66332843).

231413725 is a wasteful number, since it uses less digits than its factorization.

231413725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625 (or 2620 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 231413725 is about 15212.2886180877. The cubic root of 231413725 is about 613.9453358444.

Adding to 231413725 its reverse (527314132), we get a palindrome (758727857).

The spelling of 231413725 in words is "two hundred thirty-one million, four hundred thirteen thousand, seven hundred twenty-five".