231000131 has 8 divisors (see below), whose sum is σ = 244757664. Its totient is φ = 217261440.

The previous prime is 231000113. The next prime is 231000151. The reversal of 231000131 is 131000132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231000131 - 2⁶ = 231000067 is a prime.

It is a super-2 number, since 2×231000131² = 106722121044034322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231000101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26501 + ... + 34121.

It is an arithmetic number, because the mean of its divisors is an integer number (30594708).

Almost surely, 2^231000131 is an apocalyptic number.

231000131 is a deficient number, since it is larger than the sum of its proper divisors (13757533).

231000131 is a wasteful number, since it uses less digits than its factorization.

231000131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9421.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 231000131 is about 15198.6884631537. The cubic root of 231000131 is about 613.5793599530.

Adding to 231000131 its reverse (131000132), we get a palindrome (362000263).

Subtracting from 231000131 its reverse (131000132), we obtain a palindrome (99999999).

The spelling of 231000131 in words is "two hundred thirty-one million, one hundred thirty-one", and thus it is an aban number.