311423444 has 12 divisors (see below), whose sum is σ = 547003968. Its totient is φ = 155136600.

The previous prime is 311423443. The next prime is 311423461. The reversal of 311423444 is 444324113.

It is a super-2 number, since 2×311423444² = 193969122945642272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311423443) 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, 142562 + ... + 144729.

It is an arithmetic number, because the mean of its divisors is an integer number (45583664).

Almost surely, 2^311423444 is an apocalyptic number.

It is an amenable number.

311423444 is a deficient number, since it is larger than the sum of its proper divisors (235580524).

311423444 is a wasteful number, since it uses less digits than its factorization.

311423444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287566 (or 287564 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 311423444 is about 17647.1936579163. The cubic root of 311423444 is about 677.8242482356.

Adding to 311423444 its reverse (444324113), we get a palindrome (755747557).

The spelling of 311423444 in words is "three hundred eleven million, four hundred twenty-three thousand, four hundred forty-four".