13261100343 has 4 divisors (see below), whose sum is σ = 17681467128. Its totient is φ = 8840733560.

The previous prime is 13261100327. The next prime is 13261100371. The reversal of 13261100343 is 34300116231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34300116231 = 3 ⋅11433372077.

It is a cyclic number.

It is not a de Polignac number, because 13261100343 - 2⁴ = 13261100327 is a prime.

It is a super-2 number, since 2×13261100343² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13261100383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210183388 + ... + 2210183393.

It is an arithmetic number, because the mean of its divisors is an integer number (4420366782).

Almost surely, 2^13261100343 is an apocalyptic number.

13261100343 is a deficient number, since it is larger than the sum of its proper divisors (4420366785).

13261100343 is an equidigital number, since it uses as much as digits as its factorization.

13261100343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420366784.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 13261100343 its reverse (34300116231), we get a palindrome (47561216574).

The spelling of 13261100343 in words is "thirteen billion, two hundred sixty-one million, one hundred thousand, three hundred forty-three".