31213323233 has 8 divisors (see below), whose sum is σ = 31804993440. Its totient is φ = 30627007840.

The previous prime is 31213323223. The next prime is 31213323269. The reversal of 31213323233 is 33232331213.

It is a happy number.

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 31213323233 - 2⁴ = 31213323217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31213323223) 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 7 ways as a sum of consecutive naturals, for example, 1326935 + ... + 1350252.

It is an arithmetic number, because the mean of its divisors is an integer number (3975624180).

Almost surely, 2^31213323233 is an apocalyptic number.

It is an amenable number.

31213323233 is a deficient number, since it is larger than the sum of its proper divisors (591670207).

31213323233 is a wasteful number, since it uses less digits than its factorization.

31213323233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677407.

The product of its digits is 5832, while the sum is 26.

Adding to 31213323233 its reverse (33232331213), we get a palindrome (64445654446).

The spelling of 31213323233 in words is "thirty-one billion, two hundred thirteen million, three hundred twenty-three thousand, two hundred thirty-three".