311542351213 has 16 divisors (see below), whose sum is σ = 330152604480. Its totient is φ = 293540518656.

The previous prime is 311542351129. The next prime is 311542351217. The reversal of 311542351213 is 312153245113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311542351213 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 (311542351217) 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, 541356 + ... + 957157.

It is an arithmetic number, because the mean of its divisors is an integer number (20634537780).

Almost surely, 2^311542351213 is an apocalyptic number.

It is an amenable number.

311542351213 is a deficient number, since it is larger than the sum of its proper divisors (18610253267).

311542351213 is a wasteful number, since it uses less digits than its factorization.

311542351213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498716.

The product of its digits is 10800, while the sum is 31.

Adding to 311542351213 its reverse (312153245113), we get a palindrome (623695596326).

The spelling of 311542351213 in words is "three hundred eleven billion, five hundred forty-two million, three hundred fifty-one thousand, two hundred thirteen".