31203031304023 has 16 divisors (see below), whose sum is σ = 32247483696000. Its totient is φ = 30169397171232.

The previous prime is 31203031304009. The next prime is 31203031304089. The reversal of 31203031304023 is 32040313030213.

It is a de Polignac number, because none of the positive numbers 2^k-31203031304023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203031304623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8048388 + ... + 11277526.

It is an arithmetic number, because the mean of its divisors is an integer number (2015467731000).

Almost surely, 2^{31203031304023} is an apocalyptic number.

31203031304023 is a deficient number, since it is larger than the sum of its proper divisors (1044452391977).

31203031304023 is a wasteful number, since it uses less digits than its factorization.

31203031304023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230814.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 31203031304023 its reverse (32040313030213), we get a palindrome (63243344334236).

The spelling of 31203031304023 in words is "thirty-one trillion, two hundred three billion, thirty-one million, three hundred four thousand, twenty-three".