1313143251 has 16 divisors (see below), whose sum is σ = 2030847744. Its totient is φ = 739167264.

The previous prime is 1313143241. The next prime is 1313143253. The reversal of 1313143251 is 1523413131.

It is not a de Polignac number, because 1313143251 - 2⁹ = 1313142739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313143253) 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 15 ways as a sum of consecutive naturals, for example, 465240 + ... + 468053.

It is an arithmetic number, because the mean of its divisors is an integer number (126927984).

Almost surely, 2^1313143251 is an apocalyptic number.

1313143251 is a deficient number, since it is larger than the sum of its proper divisors (717704493).

1313143251 is an equidigital number, since it uses as much as digits as its factorization.

1313143251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933370.

The product of its digits is 1080, while the sum is 24.

The square root of 1313143251 is about 36237.3184852301. The cubic root of 1313143251 is about 1095.0586211606.

Adding to 1313143251 its reverse (1523413131), we get a palindrome (2836556382).

The spelling of 1313143251 in words is "one billion, three hundred thirteen million, one hundred forty-three thousand, two hundred fifty-one".