311225423 has 4 divisors (see below), whose sum is σ = 311261088. Its totient is φ = 311189760.

The previous prime is 311225401. The next prime is 311225429. The reversal of 311225423 is 324522113.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 311225423 - 2¹⁴ = 311209039 is a prime.

It is a super-2 number, since 2×311225423² = 193722527843057858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311225429) 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, 5018 + ... + 25448.

It is an arithmetic number, because the mean of its divisors is an integer number (77815272).

Almost surely, 2^311225423 is an apocalyptic number.

311225423 is a deficient number, since it is larger than the sum of its proper divisors (35665).

311225423 is a wasteful number, since it uses less digits than its factorization.

311225423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35664.

The product of its digits is 1440, while the sum is 23.

The square root of 311225423 is about 17641.5822136225. The cubic root of 311225423 is about 677.6805511815.

Adding to 311225423 its reverse (324522113), we get a palindrome (635747536).

The spelling of 311225423 in words is "three hundred eleven million, two hundred twenty-five thousand, four hundred twenty-three".