32031232421 has 2 divisors, whose sum is σ = 32031232422. Its totient is φ = 32031232420.

The previous prime is 32031232367. The next prime is 32031232423. The reversal of 32031232421 is 12423213023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24991183396 + 7040049025 = 158086^2 + 83905^2 .

It is a cyclic number.

It is not a de Polignac number, because 32031232421 - 2⁶ = 32031232357 is a prime.

Together with 32031232423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32031232423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16015616210 + 16015616211.

It is an arithmetic number, because the mean of its divisors is an integer number (16015616211).

Almost surely, 2^32031232421 is an apocalyptic number.

It is an amenable number.

32031232421 is a deficient number, since it is larger than the sum of its proper divisors (1).

32031232421 is an equidigital number, since it uses as much as digits as its factorization.

32031232421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 32031232421 its reverse (12423213023), we get a palindrome (44454445444).

The spelling of 32031232421 in words is "thirty-two billion, thirty-one million, two hundred thirty-two thousand, four hundred twenty-one".