31232133223 has 4 divisors (see below), whose sum is σ = 31239498328. Its totient is φ = 31224768120.

The previous prime is 31232133221. The next prime is 31232133241. The reversal of 31232133223 is 32233123213.

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 31232133223 - 2¹ = 31232133221 is a prime.

It is a super-2 number, since 2×31232133223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232133221) 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, 3676188 + ... + 3684673.

It is an arithmetic number, because the mean of its divisors is an integer number (7809874582).

Almost surely, 2^31232133223 is an apocalyptic number.

31232133223 is a deficient number, since it is larger than the sum of its proper divisors (7365105).

31232133223 is an equidigital number, since it uses as much as digits as its factorization.

31232133223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7365104.

The product of its digits is 3888, while the sum is 25.

Adding to 31232133223 its reverse (32233123213), we get a palindrome (63465256436).

The spelling of 31232133223 in words is "thirty-one billion, two hundred thirty-two million, one hundred thirty-three thousand, two hundred twenty-three".