201323131002 has 24 divisors (see below), whose sum is σ = 498514419936. Its totient is φ = 57520894536.

The previous prime is 201323130971. The next prime is 201323131013. The reversal of 201323131002 is 200131323102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 798901188 + ... + 798901439.

It is an arithmetic number, because the mean of its divisors is an integer number (20771434164).

Almost surely, 2^201323131002 is an apocalyptic number.

201323131002 is an abundant number, since it is smaller than the sum of its proper divisors (297191288934).

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

201323131002 is a wasteful number, since it uses less digits than its factorization.

201323131002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597802642 (or 1597802639 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 201323131002 its reverse (200131323102), we get a palindrome (401454454104).

The spelling of 201323131002 in words is "two hundred one billion, three hundred twenty-three million, one hundred thirty-one thousand, two".