315021332 has 12 divisors (see below), whose sum is σ = 551411616. Its totient is φ = 157475160.

The previous prime is 315021299. The next prime is 315021361. The reversal of 315021332 is 233120513.

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, 30107 + ... + 39197.

It is an arithmetic number, because the mean of its divisors is an integer number (45950968).

Almost surely, 2^315021332 is an apocalyptic number.

It is an amenable number.

315021332 is a deficient number, since it is larger than the sum of its proper divisors (236390284).

315021332 is a wasteful number, since it uses less digits than its factorization.

315021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17758 (or 17756 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 315021332 is about 17748.8403001436. The cubic root of 315021332 is about 680.4245704966.

Adding to 315021332 its reverse (233120513), we get a palindrome (548141845).

The spelling of 315021332 in words is "three hundred fifteen million, twenty-one thousand, three hundred thirty-two".