31000203200001 has 16 divisors (see below), whose sum is σ = 47241023845248. Its totient is φ = 17713419715200.

The previous prime is 31000203199963. The next prime is 31000203200081. The reversal of 31000203200001 is 10000230200013.

It is a happy number.

It is not a de Polignac number, because 31000203200001 - 2⁶ = 31000203199937 is a prime.

It is a super-2 number, since 2×31000203200001² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31000203200001.

It is not an unprimeable number, because it can be changed into a prime (31000203200081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40533510 + ... + 41291231.

It is an arithmetic number, because the mean of its divisors is an integer number (2952563990328).

Almost surely, 2^{31000203200001} is an apocalyptic number.

It is an amenable number.

31000203200001 is a deficient number, since it is larger than the sum of its proper divisors (16240820645247).

31000203200001 is a wasteful number, since it uses less digits than its factorization.

31000203200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81842792.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 31000203200001 its reverse (10000230200013), we get a palindrome (41000433400014).

The spelling of 31000203200001 in words is "thirty-one trillion, two hundred three million, two hundred thousand, one".