23211391894 has 8 divisors (see below), whose sum is σ = 35557877088. Its totient is φ = 11358766200.

The previous prime is 23211391891. The next prime is 23211391897. The reversal of 23211391894 is 49819311232.

It is an interprime number because it is at equal distance from previous prime (23211391891) and next prime (23211391897).

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

It is a self number, because there is not a number n which added to its sum of digits gives 23211391894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23211391891) 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, 123464757 + ... + 123464944.

It is an arithmetic number, because the mean of its divisors is an integer number (4444734636).

Almost surely, 2^23211391894 is an apocalyptic number.

23211391894 is a deficient number, since it is larger than the sum of its proper divisors (12346485194).

23211391894 is a wasteful number, since it uses less digits than its factorization.

23211391894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246929750.

The product of its digits is 93312, while the sum is 43.

The spelling of 23211391894 in words is "twenty-three billion, two hundred eleven million, three hundred ninety-one thousand, eight hundred ninety-four".