2971731980 has 96 divisors (see below), whose sum is σ = 7387656192. Its totient is φ = 983001600.

The previous prime is 2971731979. The next prime is 2971731991. The reversal of 2971731980 is 891371792.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 464000 + ... + 470360.

It is an arithmetic number, because the mean of its divisors is an integer number (76954752).

Almost surely, 2^2971731980 is an apocalyptic number.

2971731980 is a gapful number since it is divisible by the number (20) 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 2971731980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3693828096).

2971731980 is an abundant number, since it is smaller than the sum of its proper divisors (4415924212).

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

2971731980 is a wasteful number, since it uses less digits than its factorization.

2971731980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6495 (or 6493 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 2971731980 is about 54513.5944512926. The cubic root of 2971731980 is about 1437.7053184234.

The spelling of 2971731980 in words is "two billion, nine hundred seventy-one million, seven hundred thirty-one thousand, nine hundred eighty".