1321433403 has 8 divisors (see below), whose sum is σ = 1804884816. Its totient is φ = 859468800.

The previous prime is 1321433381. The next prime is 1321433411. The reversal of 1321433403 is 3043341231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321433403 - 2¹⁰ = 1321432379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321433483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5371558 + ... + 5371803.

It is an arithmetic number, because the mean of its divisors is an integer number (225610602).

Almost surely, 2^1321433403 is an apocalyptic number.

1321433403 is a deficient number, since it is larger than the sum of its proper divisors (483451413).

1321433403 is a wasteful number, since it uses less digits than its factorization.

1321433403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10743405.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 1321433403 is about 36351.5254562996. The cubic root of 1321433403 is about 1097.3582344306.

Adding to 1321433403 its reverse (3043341231), we get a palindrome (4364774634).

The spelling of 1321433403 in words is "one billion, three hundred twenty-one million, four hundred thirty-three thousand, four hundred three".