231304011133 has 16 divisors (see below), whose sum is σ = 256866494976. Its totient is φ = 206939721600.

The previous prime is 231304011077. The next prime is 231304011139. The reversal of 231304011133 is 331110403132.

It is not a de Polignac number, because 231304011133 - 2³⁷ = 93865057661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231304011139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1774768 + ... + 1900633.

It is an arithmetic number, because the mean of its divisors is an integer number (16054155936).

Almost surely, 2^231304011133 is an apocalyptic number.

It is an amenable number.

231304011133 is a deficient number, since it is larger than the sum of its proper divisors (25562483843).

231304011133 is a wasteful number, since it uses less digits than its factorization.

231304011133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675564.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231304011133 its reverse (331110403132), we get a palindrome (562414414265).

The spelling of 231304011133 in words is "two hundred thirty-one billion, three hundred four million, eleven thousand, one hundred thirty-three".