231144533104 has 20 divisors (see below), whose sum is σ = 447878530864. Its totient is φ = 115562976768.

The previous prime is 231144533077. The next prime is 231144533149. The reversal of 231144533104 is 401335441132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373092 + ... + 775555.

Almost surely, 2^231144533104 is an apocalyptic number.

It is an amenable number.

231144533104 is a deficient number, since it is larger than the sum of its proper divisors (216733997760).

231144533104 is a wasteful number, since it uses less digits than its factorization.

231144533104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161232 (or 1161226 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 231144533104 its reverse (401335441132), we get a palindrome (632479974236).

The spelling of 231144533104 in words is "two hundred thirty-one billion, one hundred forty-four million, five hundred thirty-three thousand, one hundred four".