20313233871 has 16 divisors (see below), whose sum is σ = 30959276544. Its totient is φ = 11605395744.

The previous prime is 20313233867. The next prime is 20313233873. The reversal of 20313233871 is 17833231302.

It is not a de Polignac number, because 20313233871 - 2² = 20313233867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313233873) 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, 28561 + ... + 203573.

It is an arithmetic number, because the mean of its divisors is an integer number (1934954784).

Almost surely, 2^20313233871 is an apocalyptic number.

20313233871 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20313233871 is a deficient number, since it is larger than the sum of its proper divisors (10646042673).

20313233871 is a wasteful number, since it uses less digits than its factorization.

20313233871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180550.

The product of its (nonzero) digits is 18144, while the sum is 33.

The spelling of 20313233871 in words is "twenty billion, three hundred thirteen million, two hundred thirty-three thousand, eight hundred seventy-one".