231102320 has 40 divisors (see below), whose sum is σ = 565596240. Its totient is φ = 87575040.

The previous prime is 231102293. The next prime is 231102323. The reversal of 231102320 is 23201132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×231102320³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231102295 and 231102304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231102323) 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, 74501 + ... + 77540.

It is an arithmetic number, because the mean of its divisors is an integer number (14139906).

Almost surely, 2^231102320 is an apocalyptic number.

231102320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231102320 is an abundant number, since it is smaller than the sum of its proper divisors (334493920).

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

231102320 is a wasteful number, since it uses less digits than its factorization.

231102320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152073 (or 152067 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 231102320 is about 15202.0498617785. The cubic root of 231102320 is about 613.6698242851.

Adding to 231102320 its reverse (23201132), we get a palindrome (254303452).

The spelling of 231102320 in words is "two hundred thirty-one million, one hundred two thousand, three hundred twenty".