2831042780 has 12 divisors (see below), whose sum is σ = 5945189880. Its totient is φ = 1132417104.

The previous prime is 2831042779. The next prime is 2831042783. The reversal of 2831042780 is 872401382.

2831042780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2831042780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2831042783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70776050 + ... + 70776089.

It is an arithmetic number, because the mean of its divisors is an integer number (495432490).

Almost surely, 2^2831042780 is an apocalyptic number.

2831042780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2831042780 is an abundant number, since it is smaller than the sum of its proper divisors (3114147100).

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

2831042780 is a wasteful number, since it uses less digits than its factorization.

2831042780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141552148 (or 141552146 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 2831042780 is about 53207.5443898701. The cubic root of 2831042780 is about 1414.6493706017.

The spelling of 2831042780 in words is "two billion, eight hundred thirty-one million, forty-two thousand, seven hundred eighty".