1312131703 has 16 divisors (see below), whose sum is σ = 1366522560. Its totient is φ = 1258848000.

The previous prime is 1312131701. The next prime is 1312131721. The reversal of 1312131703 is 3071312131.

It is a cyclic number.

It is not a de Polignac number, because 1312131703 - 2¹ = 1312131701 is a prime.

It is a super-3 number, since 3×1312131703³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312131701) 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, 1161643 + ... + 1162771.

It is an arithmetic number, because the mean of its divisors is an integer number (85407660).

Almost surely, 2^1312131703 is an apocalyptic number.

1312131703 is a deficient number, since it is larger than the sum of its proper divisors (54390857).

1312131703 is a wasteful number, since it uses less digits than its factorization.

1312131703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 1312131703 is about 36223.3585273370. The cubic root of 1312131703 is about 1094.7773649939. Note that the first 3 decimals are identical.

Adding to 1312131703 its reverse (3071312131), we get a palindrome (4383443834).

The spelling of 1312131703 in words is "one billion, three hundred twelve million, one hundred thirty-one thousand, seven hundred three".