3130787780 has 12 divisors (see below), whose sum is σ = 6574654380. Its totient is φ = 1252315104.

The previous prime is 3130787753. The next prime is 3130787789. The reversal of 3130787780 is 877870313.

It can be written as a sum of positive squares in 2 ways, for example, as 1669866496 + 1460921284 = 40864^2 + 38222^2 .

It is not an unprimeable number, because it can be changed into a prime (3130787789) 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, 78269675 + ... + 78269714.

It is an arithmetic number, because the mean of its divisors is an integer number (547887865).

Almost surely, 2^3130787780 is an apocalyptic number.

It is an amenable number.

3130787780 is an abundant number, since it is smaller than the sum of its proper divisors (3443866600).

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

3130787780 is a wasteful number, since it uses less digits than its factorization.

3130787780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156539398 (or 156539396 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 3130787780 is about 55953.4429682392. The cubic root of 3130787780 is about 1462.9109029268.

The spelling of 3130787780 in words is "three billion, one hundred thirty million, seven hundred eighty-seven thousand, seven hundred eighty".