313132030121 has 4 divisors (see below), whose sum is σ = 313133185872. Its totient is φ = 313130874372.

The previous prime is 313132030103. The next prime is 313132030151. The reversal of 313132030121 is 121030231313.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 121030231313 = 1901 ⋅63666613.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313132030121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 313132030093 and 313132030102.

It is not an unprimeable number, because it can be changed into a prime (313132030151) 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, 72566 + ... + 794688.

It is an arithmetic number, because the mean of its divisors is an integer number (78283296468).

Almost surely, 2^313132030121 is an apocalyptic number.

It is an amenable number.

313132030121 is a deficient number, since it is larger than the sum of its proper divisors (1155751).

313132030121 is an equidigital number, since it uses as much as digits as its factorization.

313132030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155750.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 313132030121 its reverse (121030231313), we get a palindrome (434162261434).

The spelling of 313132030121 in words is "three hundred thirteen billion, one hundred thirty-two million, thirty thousand, one hundred twenty-one".