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31084705101 = 310361568367
BaseRepresentation
bin11100111100110010…
…101111010101001101
32222020100100122001010
4130330302233111031
51002130141030401
622140301035433
72150210430252
oct347462572515
988210318033
1031084705101
111220156202a
126036255b79
132c1501c138
14170c525429
15c1de8ced6
hex73ccaf54d

31084705101 has 4 divisors (see below), whose sum is σ = 41446273472. Its totient is φ = 20723136732.

The previous prime is 31084705073. The next prime is 31084705121. The reversal of 31084705101 is 10150748013.

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 de Polignac number, because none of the positive numbers 2k-31084705101 is a prime.

It is a super-2 number, since 2×310847051012 (a number of 22 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 (31084705121) 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, 5180784181 + ... + 5180784186.

It is an arithmetic number, because the mean of its divisors is an integer number (10361568368).

Almost surely, 231084705101 is an apocalyptic number.

It is an amenable number.

31084705101 is a deficient number, since it is larger than the sum of its proper divisors (10361568371).

31084705101 is a wasteful number, since it uses less digits than its factorization.

31084705101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10361568370.

The product of its (nonzero) digits is 3360, while the sum is 30.

The spelling of 31084705101 in words is "thirty-one billion, eighty-four million, seven hundred five thousand, one hundred one".

Divisors: 1 3 10361568367 31084705101