13893431 has 2 divisors, whose sum is σ = 13893432. Its totient is φ = 13893430.

The previous prime is 13893413. The next prime is 13893479. The reversal of 13893431 is 13439831.

It is a happy number.

Together with previous prime (13893413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (13439831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13893431 - 2¹⁰ = 13892407 is a prime.

It is a super-2 number, since 2×13893431² = 386054849903522, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13893931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6946715 + 6946716.

It is an arithmetic number, because the mean of its divisors is an integer number (6946716).

Almost surely, 2^13893431 is an apocalyptic number.

13893431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13893431 is an equidigital number, since it uses as much as digits as its factorization.

13893431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 13893431 is about 3727.3893008378. The cubic root of 13893431 is about 240.4011289598.

The spelling of 13893431 in words is "thirteen million, eight hundred ninety-three thousand, four hundred thirty-one".