3111981960 has 32 divisors (see below), whose sum is σ = 9335946240. Its totient is φ = 829861824.

The previous prime is 3111981941. The next prime is 3111982009. The reversal of 3111981960 is 691891113.

3111981960 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×3111981960³ (a number of 29 digits) contains 333 as substring.

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, 12966472 + ... + 12966711.

It is an arithmetic number, because the mean of its divisors is an integer number (291748320).

Almost surely, 2^3111981960 is an apocalyptic number.

3111981960 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3111981960 is an abundant number, since it is smaller than the sum of its proper divisors (6223964280).

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

3111981960 is a wasteful number, since it uses less digits than its factorization.

3111981960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25933197 (or 25933193 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 3111981960 is about 55785.1410323574. The cubic root of 3111981960 is about 1459.9759112808.

The spelling of 3111981960 in words is "three billion, one hundred eleven million, nine hundred eighty-one thousand, nine hundred sixty".