20131301421 has 24 divisors (see below), whose sum is σ = 36253773504. Its totient is φ = 10457818560.

The previous prime is 20131301419. The next prime is 20131301423. The reversal of 20131301421 is 12410313102.

It is an interprime number because it is at equal distance from previous prime (20131301419) and next prime (20131301423).

It is not a de Polignac number, because 20131301421 - 2¹ = 20131301419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20131301394 and 20131301403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131301423) 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 23 ways as a sum of consecutive naturals, for example, 14524056 + ... + 14525441.

It is an arithmetic number, because the mean of its divisors is an integer number (1510573896).

Almost surely, 2^20131301421 is an apocalyptic number.

20131301421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20131301421 is a deficient number, since it is larger than the sum of its proper divisors (16122472083).

20131301421 is a wasteful number, since it uses less digits than its factorization.

20131301421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29049521 (or 29049518 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20131301421 its reverse (12410313102), we get a palindrome (32541614523).

The spelling of 20131301421 in words is "twenty billion, one hundred thirty-one million, three hundred one thousand, four hundred twenty-one".