231627133525 has 6 divisors (see below), whose sum is σ = 287217645602. Its totient is φ = 185301706800.

The previous prime is 231627133471. The next prime is 231627133541. The reversal of 231627133525 is 525331726132.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 298840369 + 231328293156 = 17287^2 + 480966^2 .

It is not a de Polignac number, because 231627133525 - 2¹³ = 231627125333 is a prime.

It is a super-2 number, since 2×231627133525² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4632542646 + ... + 4632542695.

Almost surely, 2^231627133525 is an apocalyptic number.

231627133525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231627133525 is a deficient number, since it is larger than the sum of its proper divisors (55590512077).

231627133525 is an equidigital number, since it uses as much as digits as its factorization.

231627133525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9265085351 (or 9265085346 counting only the distinct ones).

The product of its digits is 226800, while the sum is 40.

Adding to 231627133525 its reverse (525331726132), we get a palindrome (756958859657).

The spelling of 231627133525 in words is "two hundred thirty-one billion, six hundred twenty-seven million, one hundred thirty-three thousand, five hundred twenty-five".