312273481 has 4 divisors (see below), whose sum is σ = 336294532. Its totient is φ = 288252432.

The previous prime is 312273469. The next prime is 312273503. The reversal of 312273481 is 184372213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184372213 = 53 ⋅3478721.

It can be written as a sum of positive squares in 2 ways, for example, as 113209600 + 199063881 = 10640^2 + 14109^2 .

It is not a de Polignac number, because 312273481 - 2¹⁵ = 312240713 is a prime.

It is a super-2 number, since 2×312273481² = 195029453871714722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312270481) 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, 12010506 + ... + 12010531.

It is an arithmetic number, because the mean of its divisors is an integer number (84073633).

Almost surely, 2^312273481 is an apocalyptic number.

It is an amenable number.

312273481 is a deficient number, since it is larger than the sum of its proper divisors (24021051).

312273481 is a wasteful number, since it uses less digits than its factorization.

312273481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24021050.

The product of its digits is 8064, while the sum is 31.

The square root of 312273481 is about 17671.2614433718. The cubic root of 312273481 is about 678.4403999385.

The spelling of 312273481 in words is "three hundred twelve million, two hundred seventy-three thousand, four hundred eighty-one".