31203400403203 has 16 divisors (see below), whose sum is σ = 35849525279680. Its totient is φ = 26604613316736.

The previous prime is 31203400403143. The next prime is 31203400403251. The reversal of 31203400403203 is 30230400430213.

It is a de Polignac number, because none of the positive numbers 2^k-31203400403203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31203400103203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7152600 + ... + 10656757.

It is an arithmetic number, because the mean of its divisors is an integer number (2240595329980).

Almost surely, 2^{31203400403203} is an apocalyptic number.

31203400403203 is a deficient number, since it is larger than the sum of its proper divisors (4646124876477).

31203400403203 is a wasteful number, since it uses less digits than its factorization.

31203400403203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17810686.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 31203400403203 its reverse (30230400430213), we get a palindrome (61433800833416).

The spelling of 31203400403203 in words is "thirty-one trillion, two hundred three billion, four hundred million, four hundred three thousand, two hundred three".