316263121 has 4 divisors (see below), whose sum is σ = 334866852. Its totient is φ = 297659392.

The previous prime is 316263119. The next prime is 316263127. The reversal of 316263121 is 121362613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121362613 = 31 ⋅3914923.

It can be written as a sum of positive squares in 2 ways, for example, as 259049025 + 57214096 = 16095^2 + 7564^2 .

It is not a de Polignac number, because 316263121 - 2¹ = 316263119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316263127) 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, 9301840 + ... + 9301873.

It is an arithmetic number, because the mean of its divisors is an integer number (83716713).

Almost surely, 2^316263121 is an apocalyptic number.

It is an amenable number.

316263121 is a deficient number, since it is larger than the sum of its proper divisors (18603731).

316263121 is a wasteful number, since it uses less digits than its factorization.

316263121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18603730.

The product of its digits is 1296, while the sum is 25.

The square root of 316263121 is about 17783.7881510099. The cubic root of 316263121 is about 681.3174581125.

The spelling of 316263121 in words is "three hundred sixteen million, two hundred sixty-three thousand, one hundred twenty-one".