313121229 has 4 divisors (see below), whose sum is σ = 417494976. Its totient is φ = 208747484.

The previous prime is 313121219. The next prime is 313121239. The reversal of 313121229 is 922121313.

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 an interprime number because it is at equal distance from previous prime (313121219) and next prime (313121239).

It is a cyclic number.

It is not a de Polignac number, because 313121229 - 2⁷ = 313121101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313121199 and 313121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313121209) 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, 52186869 + ... + 52186874.

It is an arithmetic number, because the mean of its divisors is an integer number (104373744).

Almost surely, 2^313121229 is an apocalyptic number.

It is an amenable number.

313121229 is a deficient number, since it is larger than the sum of its proper divisors (104373747).

313121229 is a wasteful number, since it uses less digits than its factorization.

313121229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104373746.

The product of its digits is 648, while the sum is 24.

The square root of 313121229 is about 17695.2318153790. The cubic root of 313121229 is about 679.0537798217.

The spelling of 313121229 in words is "three hundred thirteen million, one hundred twenty-one thousand, two hundred twenty-nine".