233871920087 has 16 divisors (see below), whose sum is σ = 254727839520. Its totient is φ = 213426081792.

The previous prime is 233871920057. The next prime is 233871920089. The reversal of 233871920087 is 780029178332.

It is a cyclic number.

It is not a de Polignac number, because 233871920087 - 2¹⁶ = 233871854551 is a prime.

It is a super-2 number, since 2×233871920087² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233871920089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15765968 + ... + 15780794.

It is an arithmetic number, because the mean of its divisors is an integer number (15920489970).

Almost surely, 2^233871920087 is an apocalyptic number.

233871920087 is a deficient number, since it is larger than the sum of its proper divisors (20855919433).

233871920087 is a wasteful number, since it uses less digits than its factorization.

233871920087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28562.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 233871920087 in words is "two hundred thirty-three billion, eight hundred seventy-one million, nine hundred twenty thousand, eighty-seven".