315321042 has 16 divisors (see below), whose sum is σ = 631780992. Its totient is φ = 104917200.

The previous prime is 315321029. The next prime is 315321043. The reversal of 315321042 is 240123513.

It is not an unprimeable number, because it can be changed into a prime (315321043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43834 + ... + 50517.

It is an arithmetic number, because the mean of its divisors is an integer number (39486312).

Almost surely, 2^315321042 is an apocalyptic number.

315321042 is an abundant number, since it is smaller than the sum of its proper divisors (316459950).

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

315321042 is a wasteful number, since it uses less digits than its factorization.

315321042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94913.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 315321042 is about 17757.2813797608. The cubic root of 315321042 is about 680.6402864802.

Adding to 315321042 its reverse (240123513), we get a palindrome (555444555).

The spelling of 315321042 in words is "three hundred fifteen million, three hundred twenty-one thousand, forty-two".