315221542 has 8 divisors (see below), whose sum is σ = 480846600. Its totient is φ = 154939344.

The previous prime is 315221521. The next prime is 315221567. The reversal of 315221542 is 245122513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335567 + ... + 1335802.

It is an arithmetic number, because the mean of its divisors is an integer number (60105825).

Almost surely, 2^315221542 is an apocalyptic number.

315221542 is a deficient number, since it is larger than the sum of its proper divisors (165625058).

315221542 is a wasteful number, since it uses less digits than its factorization.

315221542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671430.

The product of its digits is 2400, while the sum is 25.

The square root of 315221542 is about 17754.4794911031. The cubic root of 315221542 is about 680.5686866140.

The spelling of 315221542 in words is "three hundred fifteen million, two hundred twenty-one thousand, five hundred forty-two".