31423111303 has 4 divisors (see below), whose sum is σ = 31701192048. Its totient is φ = 31145030560.

The previous prime is 31423111277. The next prime is 31423111361. The reversal of 31423111303 is 30311132413.

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 31423111303 - 2¹³ = 31423103111 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 (31423117303) 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 3 ways as a sum of consecutive naturals, for example, 139040203 + ... + 139040428.

It is an arithmetic number, because the mean of its divisors is an integer number (7925298012).

Almost surely, 2^31423111303 is an apocalyptic number.

31423111303 is a deficient number, since it is larger than the sum of its proper divisors (278080745).

31423111303 is a wasteful number, since it uses less digits than its factorization.

31423111303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278080744.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31423111303 its reverse (30311132413), we get a palindrome (61734243716).

The spelling of 31423111303 in words is "thirty-one billion, four hundred twenty-three million, one hundred eleven thousand, three hundred three".