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102265031 = 1127913331
BaseRepresentation
bin1100001100001…
…11000011000111
321010102121020202
412012013003013
5202134440111
614051521115
72351144531
oct606070307
9233377222
10102265031
11527a9260
122a2b919b
131825776b
14d820851
158ea0b3b
hex61870c7

102265031 has 8 divisors (see below), whose sum is σ = 111635328. Its totient is φ = 92907000.

The previous prime is 102265021. The next prime is 102265039. The reversal of 102265031 is 130562201.

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 102265031 - 214 = 102248647 is a prime.

It is a super-2 number, since 2×1022650312 = 20916273130861922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 102264994 and 102265012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102265039) 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, 29036 + ... + 32366.

It is an arithmetic number, because the mean of its divisors is an integer number (13954416).

Almost surely, 2102265031 is an apocalyptic number.

102265031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102265031 is the 4523-rd centered decagonal number.

102265031 is a deficient number, since it is larger than the sum of its proper divisors (9370297).

102265031 is a wasteful number, since it uses less digits than its factorization.

102265031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6133.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 102265031 is about 10112.6174158820. The cubic root of 102265031 is about 467.6371999535.

The spelling of 102265031 in words is "one hundred two million, two hundred sixty-five thousand, thirty-one".

Divisors: 1 11 2791 3331 30701 36641 9296821 102265031