312211213013 has 16 divisors (see below), whose sum is σ = 370661184000. Its totient is φ = 257300558592.

The previous prime is 312211212961. The next prime is 312211213021. The reversal of 312211213013 is 310312112213.

It is a happy number.

It is not a de Polignac number, because 312211213013 - 2¹⁸ = 312210950869 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 (312211213513) 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, 3169028 + ... + 3266061.

It is an arithmetic number, because the mean of its divisors is an integer number (23166324000).

Almost surely, 2^312211213013 is an apocalyptic number.

It is an amenable number.

312211213013 is a deficient number, since it is larger than the sum of its proper divisors (58449970987).

312211213013 is a wasteful number, since it uses less digits than its factorization.

312211213013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435364.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312211213013 its reverse (310312112213), we get a palindrome (622523325226).

The spelling of 312211213013 in words is "three hundred twelve billion, two hundred eleven million, two hundred thirteen thousand, thirteen".