2512131305 has 8 divisors (see below), whose sum is σ = 3017017800. Its totient is φ = 2008064896.

The previous prime is 2512131263. The next prime is 2512131329. The reversal of 2512131305 is 5031312152.

It is a happy number.

2512131305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 243609664 + 2268521641 = 15608^2 + 47629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2512131305 - 2¹⁶ = 2512065769 is a prime.

It is a super-2 number, since 2×2512131305² = 12621607387122006050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198260 + ... + 210549.

It is an arithmetic number, because the mean of its divisors is an integer number (377127225).

Almost surely, 2^2512131305 is an apocalyptic number.

It is an amenable number.

2512131305 is a deficient number, since it is larger than the sum of its proper divisors (504886495).

2512131305 is a wasteful number, since it uses less digits than its factorization.

2512131305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410043.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2512131305 is about 50121.1662374291. The cubic root of 2512131305 is about 1359.4005621335.

Adding to 2512131305 its reverse (5031312152), we get a palindrome (7543443457).

The spelling of 2512131305 in words is "two billion, five hundred twelve million, one hundred thirty-one thousand, three hundred five".