311747148 has 18 divisors (see below), whose sum is σ = 788027604. Its totient is φ = 103915704.

The previous prime is 311747143. The next prime is 311747159. The reversal of 311747148 is 841747113.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×311747148² = 194372568572267808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 8659643 = 311747148 / (3 + 1 + 1 + 7 + 4 + 7 + 1 + 4 + 8).

It is not an unprimeable number, because it can be changed into a prime (311747143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4329786 + ... + 4329857.

Almost surely, 2^311747148 is an apocalyptic number.

It is an amenable number.

311747148 is an abundant number, since it is smaller than the sum of its proper divisors (476280456).

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

311747148 is a wasteful number, since it uses less digits than its factorization.

311747148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8659653 (or 8659648 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 311747148 is about 17656.3628191086. The cubic root of 311747148 is about 678.0590180175.

The spelling of 311747148 in words is "three hundred eleven million, seven hundred forty-seven thousand, one hundred forty-eight".