3100999680 has 256 divisors, whose sum is σ = 11041336800. Its totient is φ = 825753600.

The previous prime is 3100999669. The next prime is 3100999697. The reversal of 3100999680 is 869990013.

It is a tau number, because it is divible by the number of its divisors (256).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 4423330 + ... + 4424030.

Almost surely, 2^3100999680 is an apocalyptic number.

3100999680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3100999680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5520668400).

3100999680 is an abundant number, since it is smaller than the sum of its proper divisors (7940337120).

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

3100999680 is an frugal number, since it uses more digits than its factorization.

3100999680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 3100999680 is about 55686.6202960819. The cubic root of 3100999680 is about 1458.2564537286.

The spelling of 3100999680 in words is "three billion, one hundred million, nine hundred ninety-nine thousand, six hundred eighty".