23220311994 has 24 divisors (see below), whose sum is σ = 54884374272. Its totient is φ = 7036458120.

The previous prime is 23220311987. The next prime is 23220312001. The reversal of 23220311994 is 49911302232.

23220311994 is a `hidden beast` number, since 232 + 20 + 311 + 9 + 94 = 666.

It is an interprime number because it is at equal distance from previous prime (23220311987) and next prime (23220312001).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58636954 + ... + 58637349.

It is an arithmetic number, because the mean of its divisors is an integer number (2286848928).

Almost surely, 2^23220311994 is an apocalyptic number.

23220311994 is an abundant number, since it is smaller than the sum of its proper divisors (31664062278).

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

23220311994 is a wasteful number, since it uses less digits than its factorization.

23220311994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117274322 (or 117274319 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 23220311994 in words is "twenty-three billion, two hundred twenty million, three hundred eleven thousand, nine hundred ninety-four".