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101245031 = 4119912409
BaseRepresentation
bin1100000100011…
…10000001100111
321001111210001222
412002032001213
5201404320111
614014010555
72336366006
oct602160147
9231453058
10101245031
1152171988
1229aa6a5b
1317c8b404
14d636c3d
158d4d7db
hex608e067

101245031 has 8 divisors (see below), whose sum is σ = 104244000. Its totient is φ = 98271360.

The previous prime is 101245019. The next prime is 101245033. The reversal of 101245031 is 130542101.

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 101245031 - 26 = 101244967 is a prime.

It is a super-2 number, since 2×1012450312 = 20501112604381922, 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 (101245033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955 + ... + 14363.

It is an arithmetic number, because the mean of its divisors is an integer number (13030500).

Almost surely, 2101245031 is an apocalyptic number.

101245031 is a deficient number, since it is larger than the sum of its proper divisors (2998969).

101245031 is a wasteful number, since it uses less digits than its factorization.

101245031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12649.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 101245031 is about 10062.0589841245. The cubic root of 101245031 is about 466.0772511568.

Adding to 101245031 its reverse (130542101), we get a palindrome (231787132).

The spelling of 101245031 in words is "one hundred one million, two hundred forty-five thousand, thirty-one".

Divisors: 1 41 199 8159 12409 508769 2469391 101245031