32431421 has 4 divisors (see below), whose sum is σ = 35379744. Its totient is φ = 29483100.

The previous prime is 32431387. The next prime is 32431433. The reversal of 32431421 is 12413423.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 32431421 - 2¹⁴ = 32415037 is a prime.

It is a super-3 number, since 3×32431421³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32431393 and 32431402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32431471) 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, 1474145 + ... + 1474166.

It is an arithmetic number, because the mean of its divisors is an integer number (8844936).

Almost surely, 2^32431421 is an apocalyptic number.

It is an amenable number.

32431421 is a deficient number, since it is larger than the sum of its proper divisors (2948323).

32431421 is a wasteful number, since it uses less digits than its factorization.

32431421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948322.

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

The square root of 32431421 is about 5694.8591729735. The cubic root of 32431421 is about 318.9005923816.

Adding to 32431421 its reverse (12413423), we get a palindrome (44844844).

It can be divided in two parts, 3243 and 1421, that added together give a palindrome (4664).

The spelling of 32431421 in words is "thirty-two million, four hundred thirty-one thousand, four hundred twenty-one".