14251421531 has 4 divisors (see below), whose sum is σ = 14252270952. Its totient is φ = 14250572112.

The previous prime is 14251421519. The next prime is 14251421549. The reversal of 14251421531 is 13512415241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13512415241 = 13 ⋅1039416557.

It is a cyclic number.

It is not a de Polignac number, because 14251421531 - 2¹⁰ = 14251420507 is a prime.

It is a super-2 number, since 2×14251421531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14251421494 and 14251421503.

It is not an unprimeable number, because it can be changed into a prime (14251421731) 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, 399026 + ... + 433271.

It is an arithmetic number, because the mean of its divisors is an integer number (3563067738).

Almost surely, 2^14251421531 is an apocalyptic number.

14251421531 is a deficient number, since it is larger than the sum of its proper divisors (849421).

14251421531 is an equidigital number, since it uses as much as digits as its factorization.

14251421531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849420.

The product of its digits is 4800, while the sum is 29.

Adding to 14251421531 its reverse (13512415241), we get a palindrome (27763836772).

The spelling of 14251421531 in words is "fourteen billion, two hundred fifty-one million, four hundred twenty-one thousand, five hundred thirty-one".