231314442109 has 4 divisors (see below), whose sum is σ = 231321356604. Its totient is φ = 231307527616.

The previous prime is 231314442091. The next prime is 231314442193. The reversal of 231314442109 is 901244413132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148030254009 + 83284188100 = 384747^2 + 288590^2 .

It is a cyclic number.

It is not a de Polignac number, because 231314442109 - 2⁵ = 231314442077 is a prime.

It is a super-2 number, since 2×231314442109² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231314442209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3406822 + ... + 3474055.

It is an arithmetic number, because the mean of its divisors is an integer number (57830339151).

Almost surely, 2^231314442109 is an apocalyptic number.

It is an amenable number.

231314442109 is a deficient number, since it is larger than the sum of its proper divisors (6914495).

231314442109 is an equidigital number, since it uses as much as digits as its factorization.

231314442109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6914494.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 231314442109 in words is "two hundred thirty-one billion, three hundred fourteen million, four hundred forty-two thousand, one hundred nine".