1313320235 has 16 divisors (see below), whose sum is σ = 1613364480. Its totient is φ = 1025973600.

The previous prime is 1313320207. The next prime is 1313320237. The reversal of 1313320235 is 5320233131.

1313320235 = T₄₀₉₅ + T₄₀₉₆ + ... + T₄₂₄₅.

It is not a de Polignac number, because 1313320235 - 2⁸ = 1313319979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313320235.

It is not an unprimeable number, because it can be changed into a prime (1313320237) 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, 29804 + ... + 59286.

It is an arithmetic number, because the mean of its divisors is an integer number (100835280).

Almost surely, 2^1313320235 is an apocalyptic number.

1313320235 is a deficient number, since it is larger than the sum of its proper divisors (300044245).

1313320235 is a wasteful number, since it uses less digits than its factorization.

1313320235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29698.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 1313320235 is about 36239.7604158747. The cubic root of 1313320235 is about 1095.1078158818.

Adding to 1313320235 its reverse (5320233131), we get a palindrome (6633553366).

The spelling of 1313320235 in words is "one billion, three hundred thirteen million, three hundred twenty thousand, two hundred thirty-five".