5123131267 has 2 divisors, whose sum is σ = 5123131268. Its totient is φ = 5123131266.

The previous prime is 5123131163. The next prime is 5123131283. The reversal of 5123131267 is 7621313215.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5123131267 is a prime.

It is not a weakly prime, because it can be changed into another prime (5123131667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2561565633 + 2561565634.

It is an arithmetic number, because the mean of its divisors is an integer number (2561565634).

Almost surely, 2^5123131267 is an apocalyptic number.

5123131267 is a deficient number, since it is larger than the sum of its proper divisors (1).

5123131267 is an equidigital number, since it uses as much as digits as its factorization.

5123131267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 5123131267 is about 71576.0523289738. The cubic root of 5123131267 is about 1723.8990403309.

The spelling of 5123131267 in words is "five billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred sixty-seven".