231684072 has 32 divisors (see below), whose sum is σ = 579696480. Its totient is φ = 77163200.

The previous prime is 231684067. The next prime is 231684077. The reversal of 231684072 is 270486132.

It is an interprime number because it is at equal distance from previous prime (231684067) and next prime (231684077).

It is not an unprimeable number, because it can be changed into a prime (231684077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31498 + ... + 38150.

It is an arithmetic number, because the mean of its divisors is an integer number (18115515).

Almost surely, 2^231684072 is an apocalyptic number.

It is an amenable number.

231684072 is an abundant number, since it is smaller than the sum of its proper divisors (348012408).

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

231684072 is a wasteful number, since it uses less digits than its factorization.

231684072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8113 (or 8109 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 231684072 is about 15221.1718339949. The cubic root of 231684072 is about 614.1843215073.

The spelling of 231684072 in words is "two hundred thirty-one million, six hundred eighty-four thousand, seventy-two".