6311197920 has 48 divisors (see below), whose sum is σ = 19880274960. Its totient is φ = 1682985984.

The previous prime is 6311197913. The next prime is 6311197939. The reversal of 6311197920 is 297911136.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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, 6573685 + ... + 6574644.

It is an arithmetic number, because the mean of its divisors is an integer number (414172395).

Almost surely, 2^6311197920 is an apocalyptic number.

6311197920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6311197920 is an abundant number, since it is smaller than the sum of its proper divisors (13569077040).

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

6311197920 is a wasteful number, since it uses less digits than its factorization.

6311197920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13148347 (or 13148339 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 6311197920 is about 79443.0482798841. The cubic root of 6311197920 is about 1848.0083674965.

The spelling of 6311197920 in words is "six billion, three hundred eleven million, one hundred ninety-seven thousand, nine hundred twenty".