13422431 has 8 divisors (see below), whose sum is σ = 14708304. Its totient is φ = 12147520.

The previous prime is 13422421. The next prime is 13422433.

13422431 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 13422431 - 2¹⁰ = 13421407 is a prime.

It is a super-2 number, since 2×13422431² = 360323307899522, 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 (13422433) 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, 56 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (1838538).

Almost surely, 2^13422431 is an apocalyptic number.

13422431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13422431 is a deficient number, since it is larger than the sum of its proper divisors (1285873).

13422431 is a wasteful number, since it uses less digits than its factorization.

13422431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481.

The product of its digits is 576, while the sum is 20.

The square root of 13422431 is about 3663.6636035531. The cubic root of 13422431 is about 237.6532329701.

It can be divided in two parts, 1342 and 2431, that added together give a palindrome (3773).

The spelling of 13422431 in words is "thirteen million, four hundred twenty-two thousand, four hundred thirty-one".