13031400443 has 4 divisors (see below), whose sum is σ = 13032954528. Its totient is φ = 13029846360.

The previous prime is 13031400427. The next prime is 13031400449. The reversal of 13031400443 is 34400413031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13031400443 - 2⁴ = 13031400427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031400449) 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, 764396 + ... + 781257.

It is an arithmetic number, because the mean of its divisors is an integer number (3258238632).

Almost surely, 2^13031400443 is an apocalyptic number.

13031400443 is a deficient number, since it is larger than the sum of its proper divisors (1554085).

13031400443 is an equidigital number, since it uses as much as digits as its factorization.

13031400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554084.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 13031400443 its reverse (34400413031), we get a palindrome (47431813474).

The spelling of 13031400443 in words is "thirteen billion, thirty-one million, four hundred thousand, four hundred forty-three".