315021351 has 4 divisors (see below), whose sum is σ = 420028472. Its totient is φ = 210014232.

The previous prime is 315021299. The next prime is 315021361. The reversal of 315021351 is 153120513.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 315021351 - 2¹⁴ = 315004967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315021361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52503556 + ... + 52503561.

It is an arithmetic number, because the mean of its divisors is an integer number (105007118).

Almost surely, 2^315021351 is an apocalyptic number.

315021351 is a deficient number, since it is larger than the sum of its proper divisors (105007121).

315021351 is a wasteful number, since it uses less digits than its factorization.

315021351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105007120.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 315021351 is about 17748.8408353898. The cubic root of 315021351 is about 680.4245841761.

Adding to 315021351 its reverse (153120513), we get a palindrome (468141864).

The spelling of 315021351 in words is "three hundred fifteen million, twenty-one thousand, three hundred fifty-one".