3111145920 has 84 divisors (see below), whose sum is σ = 10701055560. Its totient is φ = 829638144.

The previous prime is 3111145909. The next prime is 3111145949. The reversal of 3111145920 is 295411113.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 537250 + ... + 543009.

Almost surely, 2^3111145920 is an apocalyptic number.

3111145920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3111145920 is an abundant number, since it is smaller than the sum of its proper divisors (7589909640).

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

3111145920 is a wasteful number, since it uses less digits than its factorization.

3111145920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080282 (or 1080269 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 3111145920 is about 55777.6471357478. The cubic root of 3111145920 is about 1459.8451577826.

The spelling of 3111145920 in words is "three billion, one hundred eleven million, one hundred forty-five thousand, nine hundred twenty".