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3131103013 = 31101003323
BaseRepresentation
bin1011101010100000…
…1101011100100101
322002012201111212021
42322220031130211
522403030244023
61234410223141
7140406636133
oct27250153445
98065644767
103131103013
111367476045
12734724ab1
133ab8c809c
14219bb2753
15134d3e35d
hexbaa0d725

3131103013 has 4 divisors (see below), whose sum is σ = 3232106368. Its totient is φ = 3030099660.

The previous prime is 3131102963. The next prime is 3131103029. The reversal of 3131103013 is 3103011313.

3131103013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3131103013 - 217 = 3130971941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131103713) 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, 50501631 + ... + 50501692.

It is an arithmetic number, because the mean of its divisors is an integer number (808026592).

Almost surely, 23131103013 is an apocalyptic number.

It is an amenable number.

3131103013 is a deficient number, since it is larger than the sum of its proper divisors (101003355).

3131103013 is a wasteful number, since it uses less digits than its factorization.

3131103013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101003354.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 3131103013 is about 55956.2598196127. The cubic root of 3131103013 is about 1462.9600005074.

Adding to 3131103013 its reverse (3103011313), we get a palindrome (6234114326).

The spelling of 3131103013 in words is "three billion, one hundred thirty-one million, one hundred three thousand, thirteen".

Divisors: 1 31 101003323 3131103013