1312040535 has 128 divisors (see below), whose sum is σ = 2592414720. Its totient is φ = 559374336.

The previous prime is 1312040519. The next prime is 1312040537. The reversal of 1312040535 is 5350402131.

It is not a de Polignac number, because 1312040535 - 2⁴ = 1312040519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312040537) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2330164 + ... + 2330726.

It is an arithmetic number, because the mean of its divisors is an integer number (20253240).

Almost surely, 2^1312040535 is an apocalyptic number.

1312040535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1312040535 is a deficient number, since it is larger than the sum of its proper divisors (1280374185).

1312040535 is a wasteful number, since it uses less digits than its factorization.

1312040535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1312040535 is about 36222.1000909666. The cubic root of 1312040535 is about 1094.7520090600.

Adding to 1312040535 its reverse (5350402131), we get a palindrome (6662442666).

The spelling of 1312040535 in words is "one billion, three hundred twelve million, forty thousand, five hundred thirty-five".