313124121 has 6 divisors (see below), whose sum is σ = 452290410. Its totient is φ = 208749408.

The previous prime is 313124117. The next prime is 313124131. The reversal of 313124121 is 121421313.

It can be written as a sum of positive squares in only one way, i.e., 241958025 + 71166096 = 15555^2 + 8436^2 .

It is not a de Polignac number, because 313124121 - 2² = 313124117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313124094 and 313124103.

It is not an unprimeable number, because it can be changed into a prime (313124131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17395776 + ... + 17395793.

It is an arithmetic number, because the mean of its divisors is an integer number (75381735).

Almost surely, 2^313124121 is an apocalyptic number.

It is an amenable number.

313124121 is a deficient number, since it is larger than the sum of its proper divisors (139166289).

313124121 is a wasteful number, since it uses less digits than its factorization.

313124121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34791575 (or 34791572 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 313124121 is about 17695.3135321192. The cubic root of 313124121 is about 679.0558704044.

Adding to 313124121 its reverse (121421313), we get a palindrome (434545434).

The spelling of 313124121 in words is "three hundred thirteen million, one hundred twenty-four thousand, one hundred twenty-one".