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10122142031 = 66071532033
BaseRepresentation
bin10010110110101001…
…11010000101001111
3222010102121002111022
421123110322011033
5131212232021111
64352224344355
7505556534111
oct113324720517
928112532438
1010122142031
11432475a141
121b65a750bb
13c540b4371
146c04793b1
153e39882db
hex25b53a14f

10122142031 has 4 divisors (see below), whose sum is σ = 10123680672. Its totient is φ = 10120603392.

The previous prime is 10122142021. The next prime is 10122142039. The reversal of 10122142031 is 13024122101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10122142031 - 222 = 10117947727 is a prime.

It is a super-2 number, since 2×101221420312 (a number of 21 digits) 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 (10122142039) 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, 759410 + ... + 772623.

It is an arithmetic number, because the mean of its divisors is an integer number (2530920168).

Almost surely, 210122142031 is an apocalyptic number.

10122142031 is a deficient number, since it is larger than the sum of its proper divisors (1538641).

10122142031 is an equidigital number, since it uses as much as digits as its factorization.

10122142031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538640.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10122142031 its reverse (13024122101), we get a palindrome (23146264132).

The spelling of 10122142031 in words is "ten billion, one hundred twenty-two million, one hundred forty-two thousand, thirty-one".

Divisors: 1 6607 1532033 10122142031