13231211420 has 24 divisors (see below), whose sum is σ = 31754907744. Its totient is φ = 4536415296.

The previous prime is 13231211417. The next prime is 13231211479. The reversal of 13231211420 is 2411213231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13231211392 and 13231211401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47254187 + ... + 47254466.

It is an arithmetic number, because the mean of its divisors is an integer number (1323121156).

Almost surely, 2^13231211420 is an apocalyptic number.

13231211420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13231211420 is an abundant number, since it is smaller than the sum of its proper divisors (18523696324).

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

13231211420 is a wasteful number, since it uses less digits than its factorization.

13231211420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94508669 (or 94508667 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13231211420 its reverse (2411213231), we get a palindrome (15642424651).

The spelling of 13231211420 in words is "thirteen billion, two hundred thirty-one million, two hundred eleven thousand, four hundred twenty".