36431421 has 16 divisors (see below), whose sum is σ = 53727744. Its totient is φ = 21812544.

The previous prime is 36431419. The next prime is 36431429. The reversal of 36431421 is 12413463.

It is not a de Polignac number, because 36431421 - 2¹ = 36431419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36431391 and 36431400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36431429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11181 + ... + 14066.

It is an arithmetic number, because the mean of its divisors is an integer number (3357984).

Almost surely, 2^36431421 is an apocalyptic number.

It is an amenable number.

36431421 is a deficient number, since it is larger than the sum of its proper divisors (17296323).

36431421 is a wasteful number, since it uses less digits than its factorization.

36431421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25300.

The product of its digits is 1728, while the sum is 24.

The square root of 36431421 is about 6035.8446799102. The cubic root of 36431421 is about 331.5064914590.

Adding to 36431421 its reverse (12413463), we get a palindrome (48844884).

The spelling of 36431421 in words is "thirty-six million, four hundred thirty-one thousand, four hundred twenty-one".