2531643013 has 4 divisors (see below), whose sum is σ = 2546802720. Its totient is φ = 2516483308.

The previous prime is 2531642969. The next prime is 2531643029. The reversal of 2531643013 is 3103461352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2531643013 - 2¹³ = 2531634821 is a prime.

It is a super-3 number, since 3×2531643013³ (a number of 29 digits) contains 333 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 (2531643053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7579603 + ... + 7579936.

It is an arithmetic number, because the mean of its divisors is an integer number (636700680).

Almost surely, 2^2531643013 is an apocalyptic number.

It is an amenable number.

2531643013 is a deficient number, since it is larger than the sum of its proper divisors (15159707).

2531643013 is a wasteful number, since it uses less digits than its factorization.

2531643013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15159706.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 2531643013 is about 50315.4351367451. The cubic root of 2531643013 is about 1362.9109745064.

The spelling of 2531643013 in words is "two billion, five hundred thirty-one million, six hundred forty-three thousand, thirteen".