2311728130 has 16 divisors (see below), whose sum is σ = 4162476024. Its totient is φ = 924387840.

The previous prime is 2311728109. The next prime is 2311728149. The reversal of 2311728130 is 318271132.

It can be written as a sum of positive squares in 4 ways, for example, as 1266434569 + 1045293561 = 35587^2 + 32331^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4527 + ... + 68146.

Almost surely, 2^2311728130 is an apocalyptic number.

2311728130 is a deficient number, since it is larger than the sum of its proper divisors (1850747894).

2311728130 is a wasteful number, since it uses less digits than its factorization.

2311728130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75861.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2311728130 is about 48080.4339622679. The cubic root of 2311728130 is about 1322.2459716276.

Adding to 2311728130 its reverse (318271132), we get a palindrome (2629999262).

The spelling of 2311728130 in words is "two billion, three hundred eleven million, seven hundred twenty-eight thousand, one hundred thirty".