233111313220 has 24 divisors (see below), whose sum is σ = 489575507904. Its totient is φ = 93236572896.

The previous prime is 233111313167. The next prime is 233111313241. The reversal of 233111313220 is 22313111332.

It is a junction number, because it is equal to n+sod(n) for n = 233111313191 and 233111313200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253752 + ... + 728431.

It is an arithmetic number, because the mean of its divisors is an integer number (20398979496).

Almost surely, 2^233111313220 is an apocalyptic number.

233111313220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233111313220 is an abundant number, since it is smaller than the sum of its proper divisors (256464194684).

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

233111313220 is a wasteful number, since it uses less digits than its factorization.

233111313220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994059 (or 994057 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 233111313220 its reverse (22313111332), we get a palindrome (255424424552).

The spelling of 233111313220 in words is "two hundred thirty-three billion, one hundred eleven million, three hundred thirteen thousand, two hundred twenty".