1332331421 has 4 divisors (see below), whose sum is σ = 1332523200. Its totient is φ = 1332139644.

The previous prime is 1332331417. The next prime is 1332331453. The reversal of 1332331421 is 1241332331.

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 1332331421 - 2² = 1332331417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1332331411) 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, 85061 + ... + 99498.

It is an arithmetic number, because the mean of its divisors is an integer number (333130800).

Almost surely, 2^1332331421 is an apocalyptic number.

It is an amenable number.

1332331421 is a deficient number, since it is larger than the sum of its proper divisors (191779).

1332331421 is an equidigital number, since it uses as much as digits as its factorization.

1332331421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191778.

The product of its digits is 1296, while the sum is 23.

The square root of 1332331421 is about 36501.1153391235. The cubic root of 1332331421 is about 1100.3666604130.

Adding to 1332331421 its reverse (1241332331), we get a palindrome (2573663752).

It can be divided in two parts, 13323 and 31421, that added together give a palindrome (44744).

The spelling of 1332331421 in words is "one billion, three hundred thirty-two million, three hundred thirty-one thousand, four hundred twenty-one".