311105428 has 6 divisors (see below), whose sum is σ = 544434506. Its totient is φ = 155552712.

The previous prime is 311105419. The next prime is 311105437. The reversal of 311105428 is 824501113.

It is an interprime number because it is at equal distance from previous prime (311105419) and next prime (311105437).

It can be written as a sum of positive squares in only one way, i.e., 293025924 + 18079504 = 17118^2 + 4252^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38888175 + ... + 38888182.

Almost surely, 2^311105428 is an apocalyptic number.

It is an amenable number.

311105428 is a deficient number, since it is larger than the sum of its proper divisors (233329078).

311105428 is a wasteful number, since it uses less digits than its factorization.

311105428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77776361 (or 77776359 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 311105428 is about 17638.1809719710. The cubic root of 311105428 is about 677.5934452609.

The spelling of 311105428 in words is "three hundred eleven million, one hundred five thousand, four hundred twenty-eight".