313311001100021 has 4 divisors (see below), whose sum is σ = 313320503756544. Its totient is φ = 313301498443500.

The previous prime is 313311001100017. The next prime is 313311001100023. The reversal of 313311001100021 is 120001100113313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 313311001100021 - 2² = 313311001100017 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 (313311001100023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4751278805 + ... + 4751344746.

It is an arithmetic number, because the mean of its divisors is an integer number (78330125939136).

Almost surely, 2^{313311001100021} is an apocalyptic number.

It is an amenable number.

313311001100021 is a deficient number, since it is larger than the sum of its proper divisors (9502656523).

313311001100021 is an equidigital number, since it uses as much as digits as its factorization.

313311001100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9502656522.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 313311001100021 its reverse (120001100113313), we get a palindrome (433312101213334).

The spelling of 313311001100021 in words is "three hundred thirteen trillion, three hundred eleven billion, one million, one hundred thousand, twenty-one".