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102223131 = 345774561
BaseRepresentation
bin1100001011111…
…00110100011011
321010100110202220
412011330310123
5202132120011
614050555123
72350611423
oct605746433
9233313686
10102223131
115277a82a
122a298aa3
131824167a
14d80d483
158e93506
hex617cd1b

102223131 has 8 divisors (see below), whose sum is σ = 136597584. Its totient is φ = 67998720.

The previous prime is 102223111. The next prime is 102223183. The reversal of 102223131 is 131322201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102223131 - 26 = 102223067 is a prime.

It is a super-2 number, since 2×1022231312 = 20899137022886322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102223131.

It is not an unprimeable number, because it can be changed into a prime (102223111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35910 + ... + 38651.

It is an arithmetic number, because the mean of its divisors is an integer number (17074698).

Almost surely, 2102223131 is an apocalyptic number.

102223131 is a deficient number, since it is larger than the sum of its proper divisors (34374453).

102223131 is an equidigital number, since it uses as much as digits as its factorization.

102223131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75021.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 102223131 is about 10110.5455342429. The cubic root of 102223131 is about 467.5733245013.

Adding to 102223131 its reverse (131322201), we get a palindrome (233545332).

The spelling of 102223131 in words is "one hundred two million, two hundred twenty-three thousand, one hundred thirty-one".

Divisors: 1 3 457 1371 74561 223683 34074377 102223131