311542215215513 has 8 divisors (see below), whose sum is σ = 313451363709120. Its totient is φ = 309635131785840.

The previous prime is 311542215215479. The next prime is 311542215215527. The reversal of 311542215215513 is 315512512245113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311542215215513 is a prime.

It is a super-2 number, since 2×311542215215513² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311542215215813) 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, 515963333 + ... + 516566786.

It is an arithmetic number, because the mean of its divisors is an integer number (39181420463640).

Almost surely, 2^{311542215215513} is an apocalyptic number.

It is an amenable number.

311542215215513 is a deficient number, since it is larger than the sum of its proper divisors (1909148493607).

311542215215513 is a wasteful number, since it uses less digits than its factorization.

311542215215513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032531967.

The product of its digits is 180000, while the sum is 41.

The spelling of 311542215215513 in words is "three hundred eleven trillion, five hundred forty-two billion, two hundred fifteen million, two hundred fifteen thousand, five hundred thirteen".