311223475 has 6 divisors (see below), whose sum is σ = 385917140. Its totient is φ = 248978760.

The previous prime is 311223467. The next prime is 311223487. The reversal of 311223475 is 574322113.

It is not a de Polignac number, because 311223475 - 2³ = 311223467 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6224445 + ... + 6224494.

Almost surely, 2^311223475 is an apocalyptic number.

311223475 is a deficient number, since it is larger than the sum of its proper divisors (74693665).

311223475 is a wasteful number, since it uses less digits than its factorization.

311223475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12448949 (or 12448944 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 311223475 is about 17641.5270030686. The cubic root of 311223475 is about 677.6791372819.

Adding to 311223475 its reverse (574322113), we get a palindrome (885545588).

The spelling of 311223475 in words is "three hundred eleven million, two hundred twenty-three thousand, four hundred seventy-five".