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100220023231 = 791268607889
BaseRepresentation
bin101110101010110010…
…1000011000110111111
3100120200111122200101021
41131111211003012333
53120222311220411
6114012422525011
710145355066436
oct1352545030677
9316614580337
10100220023231
1139559654889
121750b596767
1395b22878c3
144bca37611d
1529186eba71
hex17559431bf

100220023231 has 4 divisors (see below), whose sum is σ = 101488631200. Its totient is φ = 98951415264.

The previous prime is 100220023187. The next prime is 100220023243. The reversal of 100220023231 is 132320022001.

Adding to 100220023231 its reverse (132320022001), we get a palindrome (232540045232).

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100220023231 - 27 = 100220023103 is a prime.

It is a super-2 number, since 2×1002200232312 (a number of 23 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 (100220023531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634303866 + ... + 634304023.

It is an arithmetic number, because the mean of its divisors is an integer number (25372157800).

Almost surely, 2100220023231 is an apocalyptic number.

100220023231 is a deficient number, since it is larger than the sum of its proper divisors (1268607969).

100220023231 is an equidigital number, since it uses as much as digits as its factorization.

100220023231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268607968.

The product of its (nonzero) digits is 144, while the sum is 16.

The spelling of 100220023231 in words is "one hundred billion, two hundred twenty million, twenty-three thousand, two hundred thirty-one".

Divisors: 1 79 1268607889 100220023231