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102204431 = 741356113
BaseRepresentation
bin1100001011110…
…00010000001111
321010022112010022
412011320100033
5202131020211
614050332355
72350503050
oct605702017
9233275108
10102204431
115276777a
122a28a0bb
1318235cc4
14d806727
158e8cbdb
hex617840f

102204431 has 8 divisors (see below), whose sum is σ = 119654304. Its totient is φ = 85466880.

The previous prime is 102204419. The next prime is 102204437. The reversal of 102204431 is 134402201.

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

It is a cyclic number.

It is not a de Polignac number, because 102204431 - 218 = 101942287 is a prime.

It is a super-2 number, since 2×1022044312 = 20891491432067522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102204437) 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, 177770 + ... + 178343.

It is an arithmetic number, because the mean of its divisors is an integer number (14956788).

Almost surely, 2102204431 is an apocalyptic number.

102204431 is a deficient number, since it is larger than the sum of its proper divisors (17449873).

102204431 is an equidigital number, since it uses as much as digits as its factorization.

102204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356161.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 102204431 is about 10109.6207149428. The cubic root of 102204431 is about 467.5448112078.

Adding to 102204431 its reverse (134402201), we get a palindrome (236606632).

The spelling of 102204431 in words is "one hundred two million, two hundred four thousand, four hundred thirty-one".

Divisors: 1 7 41 287 356113 2492791 14600633 102204431