908123231 has 6 divisors (see below), whose sum is σ = 916701240. Its totient is φ = 899624756.

The previous prime is 908123213. The next prime is 908123267. The reversal of 908123231 is 132321809.

It is a de Polignac number, because none of the positive numbers 2^k-908123231 is a prime.

It is a super-2 number, since 2×908123231² = 1649375605363758722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 908123194 and 908123203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (908123201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28211 + ... + 51108.

It is an arithmetic number, because the mean of its divisors is an integer number (152783540).

Almost surely, 2^908123231 is an apocalyptic number.

908123231 is a deficient number, since it is larger than the sum of its proper divisors (8578009).

908123231 is an equidigital number, since it uses as much as digits as its factorization.

908123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79533 (or 79426 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 908123231 is about 30135.0830594508. The cubic root of 908123231 is about 968.3854641428.

The spelling of 908123231 in words is "nine hundred eight million, one hundred twenty-three thousand, two hundred thirty-one".