31003231223 has 8 divisors (see below), whose sum is σ = 32018649600. Its totient is φ = 29988770040.

The previous prime is 31003231213. The next prime is 31003231249. The reversal of 31003231223 is 32213230013.

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 31003231223 - 2⁶ = 31003231159 is a prime.

It is a super-2 number, since 2×31003231223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31003231195 and 31003231204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31003231213) 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, 173165 + ... + 303302.

It is an arithmetic number, because the mean of its divisors is an integer number (4002331200).

Almost surely, 2^31003231223 is an apocalyptic number.

31003231223 is a deficient number, since it is larger than the sum of its proper divisors (1015418377).

31003231223 is a wasteful number, since it uses less digits than its factorization.

31003231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478597.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31003231223 its reverse (32213230013), we get a palindrome (63216461236).

It can be divided in two parts, 3100 and 3231223, that added together give a palindrome (3234323).

The spelling of 31003231223 in words is "thirty-one billion, three million, two hundred thirty-one thousand, two hundred twenty-three".