1032431221 has 2 divisors, whose sum is σ = 1032431222. Its totient is φ = 1032431220.

The previous prime is 1032431219. The next prime is 1032431263. The reversal of 1032431221 is 1221342301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024896196 + 7535025 = 32014^2 + 2745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1032431221 - 2¹ = 1032431219 is a prime.

Together with 1032431219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1032431821) 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 as a sum of consecutive naturals, namely, 516215610 + 516215611.

It is an arithmetic number, because the mean of its divisors is an integer number (516215611).

Almost surely, 2^1032431221 is an apocalyptic number.

It is an amenable number.

1032431221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1032431221 is an equidigital number, since it uses as much as digits as its factorization.

1032431221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1032431221 is about 32131.4677691512. The cubic root of 1032431221 is about 1010.6956032271.

Adding to 1032431221 its reverse (1221342301), we get a palindrome (2253773522).

The spelling of 1032431221 in words is "one billion, thirty-two million, four hundred thirty-one thousand, two hundred twenty-one".