1312403235 has 64 divisors (see below), whose sum is σ = 2527289856. Its totient is φ = 573004800.

The previous prime is 1312403201. The next prime is 1312403243. The reversal of 1312403235 is 5323042131.

It is not a de Polignac number, because 1312403235 - 2¹¹ = 1312401187 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 80484 + ... + 95406.

It is an arithmetic number, because the mean of its divisors is an integer number (39488904).

Almost surely, 2^1312403235 is an apocalyptic number.

1312403235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1312403235 is a deficient number, since it is larger than the sum of its proper divisors (1214886621).

1312403235 is a wasteful number, since it uses less digits than its factorization.

1312403235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14996.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1312403235 is about 36227.1063569808. The cubic root of 1312403235 is about 1094.8528773793.

Adding to 1312403235 its reverse (5323042131), we get a palindrome (6635445366).

The spelling of 1312403235 in words is "one billion, three hundred twelve million, four hundred three thousand, two hundred thirty-five".