231162272 has 72 divisors (see below), whose sum is σ = 504348768. Its totient is φ = 104213120.

The previous prime is 231162271. The next prime is 231162287. The reversal of 231162272 is 272261132.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (231162271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 878813 + ... + 879075.

It is an arithmetic number, because the mean of its divisors is an integer number (7004844).

Almost surely, 2^231162272 is an apocalyptic number.

231162272 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 231162272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252174384).

231162272 is an abundant number, since it is smaller than the sum of its proper divisors (273186496).

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

231162272 is a wasteful number, since it uses less digits than its factorization.

231162272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 503 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 231162272 is about 15204.0215732549. The cubic root of 231162272 is about 613.7228852732.

The spelling of 231162272 in words is "two hundred thirty-one million, one hundred sixty-two thousand, two hundred seventy-two".