231234425885 has 4 divisors (see below), whose sum is σ = 277481311068. Its totient is φ = 184987540704.

The previous prime is 231234425881. The next prime is 231234425887. The reversal of 231234425885 is 588524432132.

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 127279124644 + 103955301241 = 356762^2 + 322421^2 .

It is a cyclic number.

It is not a de Polignac number, because 231234425885 - 2² = 231234425881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231234425881) 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, 23123442584 + ... + 23123442593.

It is an arithmetic number, because the mean of its divisors is an integer number (69370327767).

Almost surely, 2^231234425885 is an apocalyptic number.

It is an amenable number.

231234425885 is a deficient number, since it is larger than the sum of its proper divisors (46246885183).

231234425885 is an equidigital number, since it uses as much as digits as its factorization.

231234425885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46246885182.

The product of its digits is 1843200, while the sum is 47.

The spelling of 231234425885 in words is "two hundred thirty-one billion, two hundred thirty-four million, four hundred twenty-five thousand, eight hundred eighty-five".