231319296 has 108 divisors (see below), whose sum is σ = 718347448. Its totient is φ = 71165952.

The previous prime is 231319279. The next prime is 231319313. The reversal of 231319296 is 692913132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231319279) and next prime (231319313).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 231319296.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26091 + ... + 33813.

Almost surely, 2^231319296 is an apocalyptic number.

231319296 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231319296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359173724).

231319296 is an abundant number, since it is smaller than the sum of its proper divisors (487028152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231319296 is a wasteful number, since it uses less digits than its factorization.

231319296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7758 (or 7741 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 231319296 is about 15209.1845935277. The cubic root of 231319296 is about 613.8618171285.

It can be divided in two parts, 2313 and 19296, that added together give a square (21609 = 147²).

The spelling of 231319296 in words is "two hundred thirty-one million, three hundred nineteen thousand, two hundred ninety-six".