231696072 has 128 divisors (see below), whose sum is σ = 674697600. Its totient is φ = 73592064.

The previous prime is 231696053. The next prime is 231696079. The reversal of 231696072 is 270696132.

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

It is not an unprimeable number, because it can be changed into a prime (231696079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 423303 + ... + 423849.

It is an arithmetic number, because the mean of its divisors is an integer number (5271075).

Almost surely, 2^231696072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231696072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337348800).

231696072 is an abundant number, since it is smaller than the sum of its proper divisors (443001528).

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

231696072 is a wasteful number, since it uses less digits than its factorization.

231696072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 231696072 is about 15221.5660166752. The cubic root of 231696072 is about 614.1949251489.

It can be divided in two parts, 23169 and 6072, that added together give a square (29241 = 171²).

The spelling of 231696072 in words is "two hundred thirty-one million, six hundred ninety-six thousand, seventy-two".