1312353543 has 16 divisors (see below), whose sum is σ = 1799142912. Its totient is φ = 850392000.

The previous prime is 1312353529. The next prime is 1312353557. The reversal of 1312353543 is 3453532131.

It is an interprime number because it is at equal distance from previous prime (1312353529) and next prime (1312353557).

It is not a de Polignac number, because 1312353543 - 2¹⁶ = 1312288007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312353543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312353043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13648 + ... + 53018.

It is an arithmetic number, because the mean of its divisors is an integer number (112446432).

Almost surely, 2^1312353543 is an apocalyptic number.

1312353543 is a deficient number, since it is larger than the sum of its proper divisors (486789369).

1312353543 is a wasteful number, since it uses less digits than its factorization.

1312353543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39686.

The product of its digits is 16200, while the sum is 30.

The square root of 1312353543 is about 36226.4205104507. The cubic root of 1312353543 is about 1094.8390589343.

Adding to 1312353543 its reverse (3453532131), we get a palindrome (4765885674).

It can be divided in two parts, 13123 and 53543, that added together give a palindrome (66666).

The spelling of 1312353543 in words is "one billion, three hundred twelve million, three hundred fifty-three thousand, five hundred forty-three".