31303231223 has 8 divisors (see below), whose sum is σ = 34206573456. Its totient is φ = 28409488000.

The previous prime is 31303231213. The next prime is 31303231261. The reversal of 31303231223 is 32213230313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31303231223 - 2¹⁶ = 31303165687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31303231213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2392928 + ... + 2405973.

It is an arithmetic number, because the mean of its divisors is an integer number (4275821682).

Almost surely, 2^31303231223 is an apocalyptic number.

31303231223 is a deficient number, since it is larger than the sum of its proper divisors (2903342233).

31303231223 is a wasteful number, since it uses less digits than its factorization.

31303231223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4799505.

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

Adding to 31303231223 its reverse (32213230313), we get a palindrome (63516461536).

The spelling of 31303231223 in words is "thirty-one billion, three hundred three million, two hundred thirty-one thousand, two hundred twenty-three".