2631342280 has 256 divisors, whose sum is σ = 7468070400. Its totient is φ = 813957120.

The previous prime is 2631342257. The next prime is 2631342313. The reversal of 2631342280 is 822431362.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18930451 + ... + 18930589.

It is an arithmetic number, because the mean of its divisors is an integer number (29172150).

Almost surely, 2^2631342280 is an apocalyptic number.

2631342280 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 2631342280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3734035200).

2631342280 is an abundant number, since it is smaller than the sum of its proper divisors (4836728120).

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

2631342280 is a wasteful number, since it uses less digits than its factorization.

2631342280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 2631342280 is about 51296.6108042237. The cubic root of 2631342280 is about 1380.5721704935.

The spelling of 2631342280 in words is "two billion, six hundred thirty-one million, three hundred forty-two thousand, two hundred eighty".