311230100113021 has 8 divisors (see below), whose sum is σ = 313590712730400. Its totient is φ = 308871223883760.

The previous prime is 311230100112989. The next prime is 311230100113067. The reversal of 311230100113021 is 120311001032113.

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

It is a cyclic number.

It is not a de Polignac number, because 311230100113021 - 2⁵ = 311230100112989 is a prime.

It is a super-2 number, since 2×311230100113021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311230100113021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311230100113421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433737190 + ... + 434454151.

It is an arithmetic number, because the mean of its divisors is an integer number (39198839091300).

Almost surely, 2^{311230100113021} is an apocalyptic number.

It is an amenable number.

311230100113021 is a deficient number, since it is larger than the sum of its proper divisors (2360612617379).

311230100113021 is a wasteful number, since it uses less digits than its factorization.

311230100113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868194059.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 311230100113021 its reverse (120311001032113), we get a palindrome (431541101145134).

The spelling of 311230100113021 in words is "three hundred eleven trillion, two hundred thirty billion, one hundred million, one hundred thirteen thousand, twenty-one".