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102453031 = 211348487
BaseRepresentation
bin1100001101101…
…00111100100111
321010210011010201
412012310330213
5202211444111
614055531331
72352556612
oct606647447
9233704121
10102453031
115291752a
122a389b47
13182c21c5
14d86d179
158edb6c1
hex61b4f27

102453031 has 4 divisors (see below), whose sum is σ = 102503632. Its totient is φ = 102402432.

The previous prime is 102453007. The next prime is 102453061. The reversal of 102453031 is 130354201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130354201 = 1131153577.

It is a cyclic number.

It is not a de Polignac number, because 102453031 - 223 = 94064423 is a prime.

It is a super-2 number, since 2×1024530312 = 20993247122173922, 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 (102453061) 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, 22131 + ... + 26356.

It is an arithmetic number, because the mean of its divisors is an integer number (25625908).

Almost surely, 2102453031 is an apocalyptic number.

102453031 is a deficient number, since it is larger than the sum of its proper divisors (50601).

102453031 is an equidigital number, since it uses as much as digits as its factorization.

102453031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50600.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 102453031 is about 10121.9084662923. The cubic root of 102453031 is about 467.9235864600.

The spelling of 102453031 in words is "one hundred two million, four hundred fifty-three thousand, thirty-one".

Divisors: 1 2113 48487 102453031