231361172 has 48 divisors (see below), whose sum is σ = 472977792. Its totient is φ = 96983040.

The previous prime is 231361147. The next prime is 231361183. The reversal of 231361172 is 271163132.

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 15 ways as a sum of consecutive naturals, for example, 262172 + ... + 263052.

It is an arithmetic number, because the mean of its divisors is an integer number (9853704).

Almost surely, 2^231361172 is an apocalyptic number.

It is an amenable number.

231361172 is an abundant number, since it is smaller than the sum of its proper divisors (241616620).

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

231361172 is a wasteful number, since it uses less digits than its factorization.

231361172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 1086 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 231361172 is about 15210.5611993772. The cubic root of 231361172 is about 613.8988575986.

The spelling of 231361172 in words is "two hundred thirty-one million, three hundred sixty-one thousand, one hundred seventy-two".