312122404431013 has 16 divisors (see below), whose sum is σ = 341391235610880. Its totient is φ = 283002664590400.

The previous prime is 312122404431011. The next prime is 312122404431031. The reversal of 312122404431013 is 310134404221213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 312122404431013 - 2¹ = 312122404431011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312122404431011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76255683 + ... + 80244463.

It is an arithmetic number, because the mean of its divisors is an integer number (21336952225680).

Almost surely, 2^{312122404431013} is an apocalyptic number.

It is an amenable number.

312122404431013 is a deficient number, since it is larger than the sum of its proper divisors (29268831179867).

312122404431013 is a wasteful number, since it uses less digits than its factorization.

312122404431013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007468.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 312122404431013 its reverse (310134404221213), we get a palindrome (622256808652226).

The spelling of 312122404431013 in words is "three hundred twelve trillion, one hundred twenty-two billion, four hundred four million, four hundred thirty-one thousand, thirteen".