313121233101 has 4 divisors (see below), whose sum is σ = 417494977472. Its totient is φ = 208747488732.

The previous prime is 313121233097. The next prime is 313121233169. The reversal of 313121233101 is 101332121313.

It is a happy number.

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 not a de Polignac number, because 313121233101 - 2² = 313121233097 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 (313121233181) 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, 52186872181 + ... + 52186872186.

It is an arithmetic number, because the mean of its divisors is an integer number (104373744368).

Almost surely, 2^313121233101 is an apocalyptic number.

It is an amenable number.

313121233101 is a deficient number, since it is larger than the sum of its proper divisors (104373744371).

313121233101 is a wasteful number, since it uses less digits than its factorization.

313121233101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104373744370.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 313121233101 its reverse (101332121313), we get a palindrome (414453354414).

The spelling of 313121233101 in words is "three hundred thirteen billion, one hundred twenty-one million, two hundred thirty-three thousand, one hundred one".