23213031320 has 16 divisors (see below), whose sum is σ = 52229320560. Its totient is φ = 9285212512.

The previous prime is 23213031271. The next prime is 23213031341. The reversal of 23213031320 is 2313031232.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23213031292 and 23213031301.

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, 290162852 + ... + 290162931.

It is an arithmetic number, because the mean of its divisors is an integer number (3264332535).

Almost surely, 2^23213031320 is an apocalyptic number.

23213031320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23213031320 is an abundant number, since it is smaller than the sum of its proper divisors (29016289240).

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

23213031320 is a wasteful number, since it uses less digits than its factorization.

23213031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580325794 (or 580325790 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23213031320 its reverse (2313031232), we get a palindrome (25526062552).

The spelling of 23213031320 in words is "twenty-three billion, two hundred thirteen million, thirty-one thousand, three hundred twenty".