1314432021 has 16 divisors (see below), whose sum is σ = 2003568128. Its totient is φ = 750870000.

The previous prime is 1314432001. The next prime is 1314432059. The reversal of 1314432021 is 1202344131.

It is not a de Polignac number, because 1314432021 - 2⁹ = 1314431509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1314432001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77346 + ... + 92796.

It is an arithmetic number, because the mean of its divisors is an integer number (125223008).

Almost surely, 2^1314432021 is an apocalyptic number.

It is an amenable number.

1314432021 is a deficient number, since it is larger than the sum of its proper divisors (689136107).

1314432021 is a wasteful number, since it uses less digits than its factorization.

1314432021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19512.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1314432021 is about 36255.0964831153. The cubic root of 1314432021 is about 1095.4167484390.

Adding to 1314432021 its reverse (1202344131), we get a palindrome (2516776152).

The spelling of 1314432021 in words is "one billion, three hundred fourteen million, four hundred thirty-two thousand, twenty-one".