311431104 has 42 divisors (see below), whose sum is σ = 892662680. Its totient is φ = 103810176.

The previous prime is 311431093. The next prime is 311431117. The reversal of 311431104 is 401134113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 8.

It is a congruent number.

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, 269764 + ... + 270915.

Almost surely, 2^311431104 is an apocalyptic number.

It is an amenable number.

311431104 is an abundant number, since it is smaller than the sum of its proper divisors (581231576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311431104 is a wasteful number, since it uses less digits than its factorization.

311431104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540697 (or 540684 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 311431104 is about 17647.4106882568. The cubic root of 311431104 is about 677.8298056113.

Adding to 311431104 its reverse (401134113), we get a palindrome (712565217).

The spelling of 311431104 in words is "three hundred eleven million, four hundred thirty-one thousand, one hundred four".