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10020020131 = 111487612583
BaseRepresentation
bin10010101010011110…
…10101111110100011
3221212022102202120201
421111033111332203
5131010111121011
64334135450031
7503206523452
oct112517257643
927768382521
1010020020131
114282049480
121b37826917
13c38ba9ac4
146b0a94b99
153d9a14cc1
hex2553d5fa3

10020020131 has 8 divisors (see below), whose sum is σ = 10938299904. Its totient is φ = 9102968520.

The previous prime is 10020020119. The next prime is 10020020137. The reversal of 10020020131 is 13102002001.

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 10020020131 - 211 = 10020018083 is a prime.

It is a super-2 number, since 2×100200201312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020020137) 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, 289935 + ... + 322648.

It is an arithmetic number, because the mean of its divisors is an integer number (1367287488).

Almost surely, 210020020131 is an apocalyptic number.

10020020131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10020020131 is a deficient number, since it is larger than the sum of its proper divisors (918279773).

10020020131 is a wasteful number, since it uses less digits than its factorization.

10020020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614081.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10020020131 its reverse (13102002001), we get a palindrome (23122022132).

The spelling of 10020020131 in words is "ten billion, twenty million, twenty thousand, one hundred thirty-one".

Divisors: 1 11 1487 16357 612583 6738413 910910921 10020020131