32631421 has 4 divisors (see below), whose sum is σ = 32659452. Its totient is φ = 32603392.

The previous prime is 32631419. The next prime is 32631427. The reversal of 32631421 is 12413623.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12413623 = 499 ⋅24877.

It can be written as a sum of positive squares in 2 ways, for example, as 17724100 + 14907321 = 4210^2 + 3861^2 .

It is a cyclic number.

It is not a de Polignac number, because 32631421 - 2¹ = 32631419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32631392 and 32631401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32631427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12190 + ... + 14623.

It is an arithmetic number, because the mean of its divisors is an integer number (8164863).

Almost surely, 2^32631421 is an apocalyptic number.

It is an amenable number.

32631421 is a deficient number, since it is larger than the sum of its proper divisors (28031).

32631421 is a wasteful number, since it uses less digits than its factorization.

32631421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28030.

The product of its digits is 864, while the sum is 22.

The square root of 32631421 is about 5712.3918808149. The cubic root of 32631421 is about 319.5547877698.

The spelling of 32631421 in words is "thirty-two million, six hundred thirty-one thousand, four hundred twenty-one".