23213331978 has 8 divisors (see below), whose sum is σ = 46426663968. Its totient is φ = 7737777324.

The previous prime is 23213331961. The next prime is 23213331979. The reversal of 23213331978 is 87913331232.

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

23213331978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (23213331979) 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 3 ways as a sum of consecutive naturals, for example, 1934444326 + ... + 1934444337.

It is an arithmetic number, because the mean of its divisors is an integer number (5803332996).

Almost surely, 2^23213331978 is an apocalyptic number.

23213331978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

23213331978 is a wasteful number, since it uses less digits than its factorization.

23213331978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3868888668.

The product of its digits is 163296, while the sum is 42.

The spelling of 23213331978 in words is "twenty-three billion, two hundred thirteen million, three hundred thirty-one thousand, nine hundred seventy-eight".