231223104 has 84 divisors (see below), whose sum is σ = 757452384. Its totient is φ = 66062592.

The previous prime is 231223081. The next prime is 231223121. The reversal of 231223104 is 401322132.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24642 + ... + 32705.

Almost surely, 2^231223104 is an apocalyptic number.

231223104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231223104 is an abundant number, since it is smaller than the sum of its proper divisors (526229280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231223104 is a wasteful number, since it uses less digits than its factorization.

231223104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57372 (or 57359 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231223104 is about 15206.0219649979. The cubic root of 231223104 is about 613.7767157358.

Adding to 231223104 its reverse (401322132), we get a palindrome (632545236).

The spelling of 231223104 in words is "two hundred thirty-one million, two hundred twenty-three thousand, one hundred four".