13031421111 has 48 divisors (see below), whose sum is σ = 21000751200. Its totient is φ = 7738343424.

The previous prime is 13031421103. The next prime is 13031421131. The reversal of 13031421111 is 11112413031.

It is a happy number.

13031421111 is a `hidden beast` number, since 130 + 3 + 1 + 421 + 111 = 666.

It is not a de Polignac number, because 13031421111 - 2³ = 13031421103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031421131) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 4152535 + ... + 4155671.

It is an arithmetic number, because the mean of its divisors is an integer number (437515650).

Almost surely, 2^13031421111 is an apocalyptic number.

13031421111 is a deficient number, since it is larger than the sum of its proper divisors (7969330089).

13031421111 is a wasteful number, since it uses less digits than its factorization.

13031421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4608 (or 4605 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 13031421111 its reverse (11112413031), we get a palindrome (24143834142).

The spelling of 13031421111 in words is "thirteen billion, thirty-one million, four hundred twenty-one thousand, one hundred eleven".