311231132133213 has 16 divisors (see below), whose sum is σ = 416345740912640. Its totient is φ = 206802034689456.

The previous prime is 311231132133203. The next prime is 311231132133221. The reversal of 311231132133213 is 312331231132113.

It is not a de Polignac number, because 311231132133213 - 2¹⁴ = 311231132116829 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 (311231132133203) 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, 12233898 + ... + 27787236.

It is an arithmetic number, because the mean of its divisors is an integer number (26021608807040).

Almost surely, 2^{311231132133213} is an apocalyptic number.

It is an amenable number.

311231132133213 is a deficient number, since it is larger than the sum of its proper divisors (105114608779427).

311231132133213 is a wasteful number, since it uses less digits than its factorization.

311231132133213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15575376.

The product of its digits is 5832, while the sum is 30.

Adding to 311231132133213 its reverse (312331231132113), we get a palindrome (623562363265326).

The spelling of 311231132133213 in words is "three hundred eleven trillion, two hundred thirty-one billion, one hundred thirty-two million, one hundred thirty-three thousand, two hundred thirteen".