311413020 has 48 divisors (see below), whose sum is σ = 902028960. Its totient is φ = 80179456.

The previous prime is 311413007. The next prime is 311413057. The reversal of 311413020 is 20314113.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87747 + ... + 91226.

It is an arithmetic number, because the mean of its divisors is an integer number (18792270).

Almost surely, 2^311413020 is an apocalyptic number.

311413020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311413020 is an abundant number, since it is smaller than the sum of its proper divisors (590615940).

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

311413020 is a wasteful number, since it uses less digits than its factorization.

311413020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179014 (or 179012 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 311413020 is about 17646.8983110347. The cubic root of 311413020 is about 677.8166854152.

Adding to 311413020 its reverse (20314113), we get a palindrome (331727133).

The spelling of 311413020 in words is "three hundred eleven million, four hundred thirteen thousand, twenty".