311336980 has 24 divisors (see below), whose sum is σ = 692267688. Its totient is φ = 117209088.

The previous prime is 311336941. The next prime is 311337001. The reversal of 311336980 is 89633113.

It can be written as a sum of positive squares in 4 ways, for example, as 114832656 + 196504324 = 10716^2 + 14018^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457509 + ... + 458188.

It is an arithmetic number, because the mean of its divisors is an integer number (28844487).

Almost surely, 2^311336980 is an apocalyptic number.

It is an amenable number.

311336980 is an abundant number, since it is smaller than the sum of its proper divisors (380930708).

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

311336980 is a wasteful number, since it uses less digits than its factorization.

311336980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915723 (or 915721 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 311336980 is about 17644.7436932362. The cubic root of 311336980 is about 677.7615117679.

The spelling of 311336980 in words is "three hundred eleven million, three hundred thirty-six thousand, nine hundred eighty".