231102231 has 8 divisors (see below), whose sum is σ = 312476544. Its totient is φ = 151898040.

The previous prime is 231102227. The next prime is 231102239. The reversal of 231102231 is 132201132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231102231 - 2² = 231102227 is a prime.

It is a super-2 number, since 2×231102231² = 106816482346354722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231102231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231102239) 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, 542281 + ... + 542706.

It is an arithmetic number, because the mean of its divisors is an integer number (39059568).

Almost surely, 2^231102231 is an apocalyptic number.

231102231 is a deficient number, since it is larger than the sum of its proper divisors (81374313).

231102231 is a wasteful number, since it uses less digits than its factorization.

231102231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085061.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 231102231 is about 15202.0469345414. The cubic root of 231102231 is about 613.6697455081.

Adding to 231102231 its reverse (132201132), we get a palindrome (363303363).

The spelling of 231102231 in words is "two hundred thirty-one million, one hundred two thousand, two hundred thirty-one".