331242040 has 64 divisors (see below), whose sum is σ = 758043360. Its totient is φ = 130252800.

The previous prime is 331242013. The next prime is 331242047. The reversal of 331242040 is 40242133.

It is a junction number, because it is equal to n+sod(n) for n = 331241999 and 331242017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331242047) 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, 825840 + ... + 826240.

Almost surely, 2^331242040 is an apocalyptic number.

It is an amenable number.

331242040 is an abundant number, since it is smaller than the sum of its proper divisors (426801320).

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

331242040 is a wasteful number, since it uses less digits than its factorization.

331242040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 331242040 is about 18200.0560438698. The cubic root of 331242040 is about 691.9082095052.

Adding to 331242040 its reverse (40242133), we get a palindrome (371484173).

The spelling of 331242040 in words is "three hundred thirty-one million, two hundred forty-two thousand, forty".