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10131142031 = 45337223463
BaseRepresentation
bin10010110111101110…
…01111010110001111
3222011001112100011122
421123313033112033
5131222033021111
64353145311155
7506026200143
oct113367172617
928131470148
1010131142031
114329846a5a
121b68a954bb
13c55c159ca
146c173d223
153e4664cdb
hex25bdcf58f

10131142031 has 4 divisors (see below), whose sum is σ = 10131410832. Its totient is φ = 10130873232.

The previous prime is 10131141983. The next prime is 10131142033. The reversal of 10131142031 is 13024113101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10131142031 is a prime.

It is a super-2 number, since 2×101311420312 (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 (10131142033) 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, 66395 + ... + 157068.

It is an arithmetic number, because the mean of its divisors is an integer number (2532852708).

Almost surely, 210131142031 is an apocalyptic number.

10131142031 is a deficient number, since it is larger than the sum of its proper divisors (268801).

10131142031 is an equidigital number, since it uses as much as digits as its factorization.

10131142031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268800.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10131142031 its reverse (13024113101), we get a palindrome (23155255132).

The spelling of 10131142031 in words is "ten billion, one hundred thirty-one million, one hundred forty-two thousand, thirty-one".

Divisors: 1 45337 223463 10131142031