315453121 has 3 divisors (see below), whose sum is σ = 315470883. Its totient is φ = 315435360.

The previous prime is 315453101. The next prime is 315453161. The reversal of 315453121 is 121354513.

It is a happy number.

The square root of 315453121 is 17761.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 111534721 + 203918400 = 10561^2 + 14280^2 .

It is not a de Polignac number, because 315453121 - 2¹³ = 315444929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315453101) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8881 + ... + 26641.

It is an arithmetic number, because the mean of its divisors is an integer number (105156961).

Almost surely, 2^315453121 is an apocalyptic number.

315453121 is the 17761-st square number.

315453121 is the 8881-st centered octagonal number.

It is an amenable number.

315453121 is a deficient number, since it is larger than the sum of its proper divisors (17762).

315453121 is an frugal number, since it uses more digits than its factorization.

315453121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35522 (or 17761 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The cubic root of 315453121 is about 680.7353068218.

Multiplying 315453121 by its sum of digits (25), we get a square (7886328025 = 88805²).

The spelling of 315453121 in words is "three hundred fifteen million, four hundred fifty-three thousand, one hundred twenty-one".