2513647231 has 4 divisors (see below), whose sum is σ = 2514496264. Its totient is φ = 2512798200.

The previous prime is 2513647223. The next prime is 2513647243. The reversal of 2513647231 is 1327463152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2513647231 - 2³ = 2513647223 is a prime.

It is a super-2 number, since 2×2513647231² = 12636844803827934722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513647831) 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, 420060 + ... + 426001.

It is an arithmetic number, because the mean of its divisors is an integer number (628624066).

Almost surely, 2^2513647231 is an apocalyptic number.

2513647231 is a deficient number, since it is larger than the sum of its proper divisors (849033).

2513647231 is an equidigital number, since it uses as much as digits as its factorization.

2513647231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849032.

The product of its digits is 30240, while the sum is 34.

The square root of 2513647231 is about 50136.2865697092. The cubic root of 2513647231 is about 1359.6739470314.

The spelling of 2513647231 in words is "two billion, five hundred thirteen million, six hundred forty-seven thousand, two hundred thirty-one".