312440413 has 4 divisors (see below), whose sum is σ = 322519168. Its totient is φ = 302361660.

The previous prime is 312440407. The next prime is 312440423. The reversal of 312440413 is 314044213.

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 312440413 - 2²¹ = 310343261 is a prime.

It is a super-2 number, since 2×312440413² = 195238023351221138, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312440423) 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, 5039331 + ... + 5039392.

It is an arithmetic number, because the mean of its divisors is an integer number (80629792).

Almost surely, 2^312440413 is an apocalyptic number.

It is an amenable number.

312440413 is a deficient number, since it is larger than the sum of its proper divisors (10078755).

312440413 is a wasteful number, since it uses less digits than its factorization.

312440413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10078754.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 312440413 is about 17675.9840744441. The cubic root of 312440413 is about 678.5612696730.

Adding to 312440413 its reverse (314044213), we get a palindrome (626484626).

The spelling of 312440413 in words is "three hundred twelve million, four hundred forty thousand, four hundred thirteen".