331640342 has 16 divisors (see below), whose sum is σ = 544612032. Its totient is φ = 150210120.

The previous prime is 331640339. The next prime is 331640359. The reversal of 331640342 is 243046133.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20408 + ... + 32859.

It is an arithmetic number, because the mean of its divisors is an integer number (34038252).

Almost surely, 2^331640342 is an apocalyptic number.

331640342 is a deficient number, since it is larger than the sum of its proper divisors (212971690).

331640342 is a wasteful number, since it uses less digits than its factorization.

331640342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53563.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 331640342 is about 18210.9950853873. The cubic root of 331640342 is about 692.1854267700.

Adding to 331640342 its reverse (243046133), we get a palindrome (574686475).

The spelling of 331640342 in words is "three hundred thirty-one million, six hundred forty thousand, three hundred forty-two".