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102310231 = 1929185681
BaseRepresentation
bin1100001100100…
…10000101010111
321010111220020211
412012102011113
5202142411411
614052510251
72351423362
oct606220527
9233456224
10102310231
115282a211
122a31b387
13182721ca
14d8330d9
158eae221
hex6192157

102310231 has 8 divisors (see below), whose sum is σ = 111409200. Its totient is φ = 93582720.

The previous prime is 102310223. The next prime is 102310253. The reversal of 102310231 is 132013201.

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 102310231 - 23 = 102310223 is a prime.

It is a super-2 number, since 2×1023102312 = 20934766734546722, which 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 (102310031) 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, 92290 + ... + 93391.

It is an arithmetic number, because the mean of its divisors is an integer number (13926150).

Almost surely, 2102310231 is an apocalyptic number.

102310231 is a deficient number, since it is larger than the sum of its proper divisors (9098969).

102310231 is a wasteful number, since it uses less digits than its factorization.

102310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185729.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 102310231 is about 10114.8520008945. The cubic root of 102310231 is about 467.7060866096.

Adding to 102310231 its reverse (132013201), we get a palindrome (234323432).

The spelling of 102310231 in words is "one hundred two million, three hundred ten thousand, two hundred thirty-one".

Divisors: 1 19 29 551 185681 3527939 5384749 102310231