231303131 has 8 divisors (see below), whose sum is σ = 244219200. Its totient is φ = 218461320.

The previous prime is 231303119. The next prime is 231303133. The reversal of 231303131 is 131303132.

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 231303131 - 2⁶ = 231303067 is a prime.

It is a super-2 number, since 2×231303131² = 107002276820806322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231303133) 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, 12101 + ... + 24678.

It is an arithmetic number, because the mean of its divisors is an integer number (30527400).

Almost surely, 2^231303131 is an apocalyptic number.

231303131 is a deficient number, since it is larger than the sum of its proper divisors (12916069).

231303131 is a wasteful number, since it uses less digits than its factorization.

231303131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37129.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 231303131 is about 15208.6531619338. The cubic root of 231303131 is about 613.8475175470.

Adding to 231303131 its reverse (131303132), we get a palindrome (362606263).

Subtracting from 231303131 its reverse (131303132), we obtain a palindrome (99999999).

The spelling of 231303131 in words is "two hundred thirty-one million, three hundred three thousand, one hundred thirty-one".