322540403 has 2 divisors, whose sum is σ = 322540404. Its totient is φ = 322540402.

The previous prime is 322540381. The next prime is 322540453. The reversal of 322540403 is 304045223.

It is a weak prime.

It is an emirp because it is prime and its reverse (304045223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 322540403 - 2¹⁰ = 322539379 is a prime.

It is not a weakly prime, because it can be changed into another prime (322540453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161270201 + 161270202.

It is an arithmetic number, because the mean of its divisors is an integer number (161270202).

Almost surely, 2^322540403 is an apocalyptic number.

322540403 is a deficient number, since it is larger than the sum of its proper divisors (1).

322540403 is an equidigital number, since it uses as much as digits as its factorization.

322540403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 322540403 is about 17959.4098733784. The cubic root of 322540403 is about 685.7956216123.

Adding to 322540403 its reverse (304045223), we get a palindrome (626585626).

The spelling of 322540403 in words is "three hundred twenty-two million, five hundred forty thousand, four hundred three".