31223431410203 has 4 divisors (see below), whose sum is σ = 31224592547928. Its totient is φ = 31222270272480.

The previous prime is 31223431410191. The next prime is 31223431410233. The reversal of 31223431410203 is 30201413432213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31223431410203 - 2³⁰ = 31222357668379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31223431410233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580528526 + ... + 580582307.

It is an arithmetic number, because the mean of its divisors is an integer number (7806148136982).

Almost surely, 2^{31223431410203} is an apocalyptic number.

31223431410203 is a deficient number, since it is larger than the sum of its proper divisors (1161137725).

31223431410203 is a wasteful number, since it uses less digits than its factorization.

31223431410203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161137724.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 31223431410203 its reverse (30201413432213), we get a palindrome (61424844842416).

The spelling of 31223431410203 in words is "thirty-one trillion, two hundred twenty-three billion, four hundred thirty-one million, four hundred ten thousand, two hundred three".