13111431402 has 32 divisors (see below), whose sum is σ = 26645177664. Its totient is φ = 4300243200.

The previous prime is 13111431401. The next prime is 13111431413. The reversal of 13111431402 is 20413411131.

It is not an unprimeable number, because it can be changed into a prime (13111431401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335652 + ... + 372672.

It is an arithmetic number, because the mean of its divisors is an integer number (832661802).

Almost surely, 2^13111431402 is an apocalyptic number.

13111431402 is an abundant number, since it is smaller than the sum of its proper divisors (13533746262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13111431402 is a wasteful number, since it uses less digits than its factorization.

13111431402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37974.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 13111431402 its reverse (20413411131), we get a palindrome (33524842533).

The spelling of 13111431402 in words is "thirteen billion, one hundred eleven million, four hundred thirty-one thousand, four hundred two".