11431421402 has 16 divisors (see below), whose sum is σ = 18107668800. Its totient is φ = 5397467040.

The previous prime is 11431421389. The next prime is 11431421413. The reversal of 11431421402 is 20412413411.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471827 + ... + 495462.

It is an arithmetic number, because the mean of its divisors is an integer number (1131729300).

Almost surely, 2^11431421402 is an apocalyptic number.

11431421402 is a deficient number, since it is larger than the sum of its proper divisors (6676247398).

11431421402 is a wasteful number, since it uses less digits than its factorization.

11431421402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967621.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 11431421402 its reverse (20412413411), we get a palindrome (31843834813).

The spelling of 11431421402 in words is "eleven billion, four hundred thirty-one million, four hundred twenty-one thousand, four hundred two".