31233220423 has 8 divisors (see below), whose sum is σ = 32145863040. Its totient is φ = 30333709560.

The previous prime is 31233220397. The next prime is 31233220439. The reversal of 31233220423 is 32402233213.

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 31233220423 - 2²⁹ = 30696349511 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 (31233220523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3278113 + ... + 3287626.

It is an arithmetic number, because the mean of its divisors is an integer number (4018232880).

Almost surely, 2^31233220423 is an apocalyptic number.

31233220423 is a deficient number, since it is larger than the sum of its proper divisors (912642617).

31233220423 is an equidigital number, since it uses as much as digits as its factorization.

31233220423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6565877.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 31233220423 its reverse (32402233213), we get a palindrome (63635453636).

The spelling of 31233220423 in words is "thirty-one billion, two hundred thirty-three million, two hundred twenty thousand, four hundred twenty-three".