2531643133 has 2 divisors, whose sum is σ = 2531643134. Its totient is φ = 2531643132.

The previous prime is 2531643089. The next prime is 2531643137. The reversal of 2531643133 is 3313461352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2511813924 + 19829209 = 50118^2 + 4453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2531643133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2531643095 and 2531643104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2531643137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265821566 + 1265821567.

It is an arithmetic number, because the mean of its divisors is an integer number (1265821567).

Almost surely, 2^2531643133 is an apocalyptic number.

It is an amenable number.

2531643133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531643133 is an equidigital number, since it uses as much as digits as its factorization.

2531643133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 31.

The square root of 2531643133 is about 50315.4363292221. The cubic root of 2531643133 is about 1362.9109960404.

The spelling of 2531643133 in words is "two billion, five hundred thirty-one million, six hundred forty-three thousand, one hundred thirty-three".