311475121 has 4 divisors (see below), whose sum is σ = 314231652. Its totient is φ = 308718592.

The previous prime is 311475107. The next prime is 311475127. The reversal of 311475121 is 121574113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20295025 + 291180096 = 4505^2 + 17064^2 .

It is a cyclic number.

It is not a de Polignac number, because 311475121 - 2¹³ = 311466929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311475127) 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, 1378096 + ... + 1378321.

It is an arithmetic number, because the mean of its divisors is an integer number (78557913).

Almost surely, 2^311475121 is an apocalyptic number.

It is an amenable number.

311475121 is a deficient number, since it is larger than the sum of its proper divisors (2756531).

311475121 is a wasteful number, since it uses less digits than its factorization.

311475121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756530.

The product of its digits is 840, while the sum is 25.

The square root of 311475121 is about 17648.6577676604. The cubic root of 311475121 is about 677.8617384407.

The spelling of 311475121 in words is "three hundred eleven million, four hundred seventy-five thousand, one hundred twenty-one".