315220453 has 4 divisors (see below), whose sum is σ = 317626848. Its totient is φ = 312814060.

The previous prime is 315220441. The next prime is 315220481. The reversal of 315220453 is 354022513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315220453 - 2¹⁷ = 315089381 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 (315220403) 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, 1203001 + ... + 1203262.

It is an arithmetic number, because the mean of its divisors is an integer number (79406712).

Almost surely, 2^315220453 is an apocalyptic number.

It is an amenable number.

315220453 is a deficient number, since it is larger than the sum of its proper divisors (2406395).

315220453 is a wasteful number, since it uses less digits than its factorization.

315220453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406394.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 315220453 is about 17754.4488227599. The cubic root of 315220453 is about 680.5679028899.

Adding to 315220453 its reverse (354022513), we get a palindrome (669242966).

The spelling of 315220453 in words is "three hundred fifteen million, two hundred twenty thousand, four hundred fifty-three".