13420631 has 8 divisors (see below), whose sum is σ = 16145280. Its totient is φ = 10897848.

The previous prime is 13420619. The next prime is 13420637. The reversal of 13420631 is 13602431.

13420631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13420631 - 2¹⁴ = 13404247 is a prime.

It is a super-2 number, since 2×13420631² = 360226672876322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13420637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50321 + ... + 50586.

It is an arithmetic number, because the mean of its divisors is an integer number (2018160).

Almost surely, 2^13420631 is an apocalyptic number.

13420631 is a deficient number, since it is larger than the sum of its proper divisors (2724649).

13420631 is a wasteful number, since it uses less digits than its factorization.

13420631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100933.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13420631 is about 3663.4179395750. The cubic root of 13420631 is about 237.6426090887.

The spelling of 13420631 in words is "thirteen million, four hundred twenty thousand, six hundred thirty-one".