331540630 has 32 divisors (see below), whose sum is σ = 659358144. Its totient is φ = 119387136.

The previous prime is 331540619. The next prime is 331540661. The reversal of 331540630 is 36045133.

It is a junction number, because it is equal to n+sod(n) for n = 331540595 and 331540604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38487 + ... + 46306.

It is an arithmetic number, because the mean of its divisors is an integer number (20604942).

Almost surely, 2^331540630 is an apocalyptic number.

331540630 is a deficient number, since it is larger than the sum of its proper divisors (327817514).

331540630 is a wasteful number, since it uses less digits than its factorization.

331540630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84840.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 331540630 is about 18208.2571928233. The cubic root of 331540630 is about 692.1160482869.

Adding to 331540630 its reverse (36045133), we get a palindrome (367585763).

The spelling of 331540630 in words is "three hundred thirty-one million, five hundred forty thousand, six hundred thirty".