203122320402 has 16 divisors (see below), whose sum is σ = 406772926560. Its totient is φ = 67619392512.

The previous prime is 203122320397. The next prime is 203122320409. The reversal of 203122320402 is 204023221302.

It is not an unprimeable number, because it can be changed into a prime (203122320409) 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, 22006908 + ... + 22016135.

It is an arithmetic number, because the mean of its divisors is an integer number (25423307910).

Almost surely, 2^203122320402 is an apocalyptic number.

203122320402 is an abundant number, since it is smaller than the sum of its proper divisors (203650606158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203122320402 is a wasteful number, since it uses less digits than its factorization.

203122320402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44023817.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 203122320402 its reverse (204023221302), we get a palindrome (407145541704).

The spelling of 203122320402 in words is "two hundred three billion, one hundred twenty-two million, three hundred twenty thousand, four hundred two".