13401431 has 4 divisors (see below), whose sum is σ = 13503864. Its totient is φ = 13299000.

The previous prime is 13401397. The next prime is 13401467. The reversal of 13401431 is 13410431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13401431 is a prime.

It is a super-2 number, since 2×13401431² = 359196705695522, 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 (13401131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51020 + ... + 51281.

It is an arithmetic number, because the mean of its divisors is an integer number (3375966).

Almost surely, 2^13401431 is an apocalyptic number.

13401431 is a deficient number, since it is larger than the sum of its proper divisors (102433).

13401431 is a wasteful number, since it uses less digits than its factorization.

13401431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102432.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 13401431 is about 3660.7964980315. The cubic root of 13401431 is about 237.5292285357.

Adding to 13401431 its reverse (13410431), we get a palindrome (26811862).

The spelling of 13401431 in words is "thirteen million, four hundred one thousand, four hundred thirty-one".