231228582 has 32 divisors (see below), whose sum is σ = 499914240. Its totient is φ = 70878240.

The previous prime is 231228581. The next prime is 231228583. The reversal of 231228582 is 285822132.

It is an interprime number because it is at equal distance from previous prime (231228581) and next prime (231228583).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231228581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15669 + ... + 26607.

It is an arithmetic number, because the mean of its divisors is an integer number (15622320).

Almost surely, 2^231228582 is an apocalyptic number.

231228582 is an abundant number, since it is smaller than the sum of its proper divisors (268685658).

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

231228582 is a wasteful number, since it uses less digits than its factorization.

231228582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11228.

The product of its digits is 15360, while the sum is 33.

The square root of 231228582 is about 15206.2020899369. The cubic root of 231228582 is about 613.7815627750.

The spelling of 231228582 in words is "two hundred thirty-one million, two hundred twenty-eight thousand, five hundred eighty-two".