1313133251 has 2 divisors, whose sum is σ = 1313133252. Its totient is φ = 1313133250.

The previous prime is 1313133229. The next prime is 1313133257. The reversal of 1313133251 is 1523313131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1313133251 - 2¹⁴ = 1313116867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313133257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656566625 + 656566626.

It is an arithmetic number, because the mean of its divisors is an integer number (656566626).

Almost surely, 2^1313133251 is an apocalyptic number.

1313133251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313133251 is an equidigital number, since it uses as much as digits as its factorization.

1313133251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 23.

The square root of 1313133251 is about 36237.1805056630. The cubic root of 1313133251 is about 1095.0558414146.

Adding to 1313133251 its reverse (1523313131), we get a palindrome (2836446382).

The spelling of 1313133251 in words is "one billion, three hundred thirteen million, one hundred thirty-three thousand, two hundred fifty-one".