311225117 has 24 divisors (see below), whose sum is σ = 375444864. Its totient is φ = 257064192.

The previous prime is 311225107. The next prime is 311225119. The reversal of 311225117 is 711522113.

It is not a de Polignac number, because 311225117 - 2⁶ = 311225053 is a prime.

It is a super-2 number, since 2×311225117² = 193722146903327378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311225092 and 311225101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311225119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153293 + ... + 155309.

It is an arithmetic number, because the mean of its divisors is an integer number (15643536).

Almost surely, 2^311225117 is an apocalyptic number.

It is an amenable number.

311225117 is a deficient number, since it is larger than the sum of its proper divisors (64219747).

311225117 is a wasteful number, since it uses less digits than its factorization.

311225117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 2138 counting only the distinct ones).

The product of its digits is 420, while the sum is 23.

The square root of 311225117 is about 17641.5735409288. The cubic root of 311225117 is about 677.6803290806.

The spelling of 311225117 in words is "three hundred eleven million, two hundred twenty-five thousand, one hundred seventeen".