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1631014345 = 51492189281
BaseRepresentation
bin110000100110111…
…0100110111001001
311012200001010001201
41201031310313021
511320014424340
6425502144201
755263251602
oct14115646711
94180033051
101631014345
11767735244
12396282061
131ccba465c
14116888da9
15982c879a
hex61374dc9

1631014345 has 8 divisors (see below), whose sum is σ = 1970353800. Its totient is φ = 1296053760.

The previous prime is 1631014331. The next prime is 1631014361. The reversal of 1631014345 is 5434101361.

It can be written as a sum of positive squares in 4 ways, for example, as 85581001 + 1545433344 = 9251^2 + 39312^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1631014345 - 211 = 1631012297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093896 + ... + 1095385.

It is an arithmetic number, because the mean of its divisors is an integer number (246294225).

Almost surely, 21631014345 is an apocalyptic number.

It is an amenable number.

1631014345 is a deficient number, since it is larger than the sum of its proper divisors (339339455).

1631014345 is a wasteful number, since it uses less digits than its factorization.

1631014345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189435.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1631014345 is about 40385.8186124783. The cubic root of 1631014345 is about 1177.1159927813.

The spelling of 1631014345 in words is "one billion, six hundred thirty-one million, fourteen thousand, three hundred forty-five".

Divisors: 1 5 149 745 2189281 10946405 326202869 1631014345