31321231223223 has 8 divisors (see below), whose sum is σ = 41827824900736. Its totient is φ = 20847729180600.

The previous prime is 31321231223221. The next prime is 31321231223287. The reversal of 31321231223223 is 32232213212313.

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

It is not a de Polignac number, because 31321231223223 - 2¹ = 31321231223221 is a prime.

It is a super-3 number, since 3×31321231223223³ (a number of 41 digits) contains 333 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 (31321231223221) 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, 8272906513 + ... + 8272910298.

It is an arithmetic number, because the mean of its divisors is an integer number (5228478112592).

Almost surely, 2^{31321231223223} is an apocalyptic number.

31321231223223 is a deficient number, since it is larger than the sum of its proper divisors (10506593677513).

31321231223223 is a wasteful number, since it uses less digits than its factorization.

31321231223223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16545817445.

The product of its digits is 15552, while the sum is 30.

Adding to 31321231223223 its reverse (32232213212313), we get a palindrome (63553444435536).

The spelling of 31321231223223 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred thirty-one million, two hundred twenty-three thousand, two hundred twenty-three".