331540230 has 64 divisors (see below), whose sum is σ = 910891008. Its totient is φ = 75653760.

The previous prime is 331540229. The next prime is 331540241. The reversal of 331540230 is 32045133.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 331540197 and 331540206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190444 + ... + 192176.

It is an arithmetic number, because the mean of its divisors is an integer number (14232672).

Almost surely, 2^331540230 is an apocalyptic number.

331540230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

331540230 is an abundant number, since it is smaller than the sum of its proper divisors (579350778).

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

331540230 is a wasteful number, since it uses less digits than its factorization.

331540230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 331540230 is about 18208.2462087923. The cubic root of 331540230 is about 692.1157699434.

Adding to 331540230 its reverse (32045133), we get a palindrome (363585363).

The spelling of 331540230 in words is "three hundred thirty-one million, five hundred forty thousand, two hundred thirty".