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103163131 = 392326297
BaseRepresentation
bin1100010011000…
…10010011111011
321012010020012201
412021202103323
5202402210011
614123051031
72361605101
oct611422373
9235106181
10103163131
1153261a95
122a670a77
13184b0496
14d9b5c71
1590cbcc1
hex62624fb

103163131 has 4 divisors (see below), whose sum is σ = 103193352. Its totient is φ = 103132912.

The previous prime is 103163129. The next prime is 103163143. The reversal of 103163131 is 131361301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131361301 = 773169937.

It is a cyclic number.

It is not a de Polignac number, because 103163131 - 21 = 103163129 is a prime.

It is a super-2 number, since 2×1031631312 = 21285263195446322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103163099 and 103163108.

It is not an unprimeable number, because it can be changed into a prime (103163161) 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, 9226 + ... + 17071.

It is an arithmetic number, because the mean of its divisors is an integer number (25798338).

Almost surely, 2103163131 is an apocalyptic number.

103163131 is a deficient number, since it is larger than the sum of its proper divisors (30221).

103163131 is an equidigital number, since it uses as much as digits as its factorization.

103163131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30220.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 103163131 is about 10156.9252729357. The cubic root of 103163131 is about 469.0021549176.

The spelling of 103163131 in words is "one hundred three million, one hundred sixty-three thousand, one hundred thirty-one".

Divisors: 1 3923 26297 103163131