312431031402205 has 8 divisors (see below), whose sum is σ = 374957896802904. Its totient is φ = 249917719041600.

The previous prime is 312431031402179. The next prime is 312431031402209. The reversal of 312431031402205 is 502204130134213.

It can be written as a sum of positive squares in 4 ways, for example, as 196007924080089 + 116423107322116 = 14000283^2 + 10789954^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312431031402205 - 2¹⁵ = 312431031369437 is a prime.

It is a super-2 number, since 2×312431031402205² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312431031402209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3388209306 + ... + 3388301515.

It is an arithmetic number, because the mean of its divisors is an integer number (46869737100363).

Almost surely, 2^{312431031402205} is an apocalyptic number.

It is an amenable number.

312431031402205 is a deficient number, since it is larger than the sum of its proper divisors (62526865400699).

312431031402205 is an equidigital number, since it uses as much as digits as its factorization.

312431031402205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6776520047.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 312431031402205 its reverse (502204130134213), we get a palindrome (814635161536418).

The spelling of 312431031402205 in words is "three hundred twelve trillion, four hundred thirty-one billion, thirty-one million, four hundred two thousand, two hundred five".