231135512 has 8 divisors (see below), whose sum is σ = 433379100. Its totient is φ = 115567752.

The previous prime is 231135479. The next prime is 231135523. The reversal of 231135512 is 215531132.

It is a happy number.

231135512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14445962 + ... + 14445977.

Almost surely, 2^231135512 is an apocalyptic number.

It is an amenable number.

231135512 is a deficient number, since it is larger than the sum of its proper divisors (202243588).

231135512 is a wasteful number, since it uses less digits than its factorization.

231135512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28891945 (or 28891941 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 231135512 is about 15203.1415174628. The cubic root of 231135512 is about 613.6992022589.

Adding to 231135512 its reverse (215531132), we get a palindrome (446666644).

The spelling of 231135512 in words is "two hundred thirty-one million, one hundred thirty-five thousand, five hundred twelve".