231252325442231 has 4 divisors (see below), whose sum is σ = 233497493650512. Its totient is φ = 229007157233952.

The previous prime is 231252325442209. The next prime is 231252325442239. The reversal of 231252325442231 is 132244523252132.

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

It is a cyclic number.

It is not a de Polignac number, because 231252325442231 - 2⁶ = 231252325442167 is a prime.

It is a super-2 number, since 2×231252325442231² (a number of 30 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 (231252325442239) 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, 1122584103986 + ... + 1122584104191.

It is an arithmetic number, because the mean of its divisors is an integer number (58374373412628).

Almost surely, 2^{231252325442231} is an apocalyptic number.

231252325442231 is a deficient number, since it is larger than the sum of its proper divisors (2245168208281).

231252325442231 is a wasteful number, since it uses less digits than its factorization.

231252325442231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245168208280.

The product of its digits is 691200, while the sum is 41.

Adding to 231252325442231 its reverse (132244523252132), we get a palindrome (363496848694363).

The spelling of 231252325442231 in words is "two hundred thirty-one trillion, two hundred fifty-two billion, three hundred twenty-five million, four hundred forty-two thousand, two hundred thirty-one".