231573672 has 144 divisors (see below), whose sum is σ = 726180000. Its totient is φ = 66432960.

The previous prime is 231573659. The next prime is 231573701. The reversal of 231573672 is 276375132.

231573672 is a `hidden beast` number, since 23 + 1 + 573 + 67 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 164829 + ... + 166227.

Almost surely, 2^231573672 is an apocalyptic number.

231573672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231573672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363090000).

231573672 is an abundant number, since it is smaller than the sum of its proper divisors (494606328).

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

231573672 is a wasteful number, since it uses less digits than its factorization.

231573672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452 (or 1434 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 231573672 is about 15217.5448742562. The cubic root of 231573672 is about 614.0867508205.

The spelling of 231573672 in words is "two hundred thirty-one million, five hundred seventy-three thousand, six hundred seventy-two".