31234223320 has 16 divisors (see below), whose sum is σ = 70277002560. Its totient is φ = 12493689312.

The previous prime is 31234223213. The next prime is 31234223347. The reversal of 31234223320 is 2332243213.

It is a super-3 number, since 3×31234223320³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390427752 + ... + 390427831.

It is an arithmetic number, because the mean of its divisors is an integer number (4392312660).

Almost surely, 2^31234223320 is an apocalyptic number.

It is an amenable number.

31234223320 is an abundant number, since it is smaller than the sum of its proper divisors (39042779240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31234223320 is a wasteful number, since it uses less digits than its factorization.

31234223320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780855594 (or 780855590 counting only the distinct ones).

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

Adding to 31234223320 its reverse (2332243213), we get a palindrome (33566466533).

The spelling of 31234223320 in words is "thirty-one billion, two hundred thirty-four million, two hundred twenty-three thousand, three hundred twenty".