31223132303 has 4 divisors (see below), whose sum is σ = 34061598888. Its totient is φ = 28384665720.

The previous prime is 31223132299. The next prime is 31223132309. The reversal of 31223132303 is 30323132213.

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 31223132303 - 2² = 31223132299 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 (31223132309) 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, 1419233276 + ... + 1419233297.

It is an arithmetic number, because the mean of its divisors is an integer number (8515399722).

Almost surely, 2^31223132303 is an apocalyptic number.

31223132303 is a deficient number, since it is larger than the sum of its proper divisors (2838466585).

31223132303 is a wasteful number, since it uses less digits than its factorization.

31223132303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838466584.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31223132303 its reverse (30323132213), we get a palindrome (61546264516).

The spelling of 31223132303 in words is "thirty-one billion, two hundred twenty-three million, one hundred thirty-two thousand, three hundred three".