231172116 has 24 divisors (see below), whose sum is σ = 616459200. Its totient is φ = 66049152.

The previous prime is 231172111. The next prime is 231172121. The reversal of 231172116 is 611271132.

It is an interprime number because it is at equal distance from previous prime (231172111) and next prime (231172121).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231172111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1375941 + ... + 1376108.

It is an arithmetic number, because the mean of its divisors is an integer number (25685800).

Almost surely, 2^231172116 is an apocalyptic number.

It is an amenable number.

231172116 is an abundant number, since it is smaller than the sum of its proper divisors (385287084).

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

231172116 is a wasteful number, since it uses less digits than its factorization.

231172116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752063 (or 2752061 counting only the distinct ones).

The product of its digits is 504, while the sum is 24.

The square root of 231172116 is about 15204.3452999463. The cubic root of 231172116 is about 613.7315969058.

The spelling of 231172116 in words is "two hundred thirty-one million, one hundred seventy-two thousand, one hundred sixteen".