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2140142311 = 19791425811
BaseRepresentation
bin111111110001111…
…1111101011100111
312112011001111100001
41333203333223213
513340334023221
6552210402131
7104014623646
oct17743775347
95464044301
102140142311
119a906665a
124b8890347
132815043c8
1416433935d
15c7d46391
hex7f8ffae7

2140142311 has 8 divisors (see below), whose sum is σ = 2281299200. Its totient is φ = 2001837240.

The previous prime is 2140142309. The next prime is 2140142317. The reversal of 2140142311 is 1132410412.

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

It is a cyclic number.

It is not a de Polignac number, because 2140142311 - 21 = 2140142309 is a prime.

It is a super-2 number, since 2×21401423112 = 9160418222664841442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140142317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711405 + ... + 714406.

It is an arithmetic number, because the mean of its divisors is an integer number (285162400).

Almost surely, 22140142311 is an apocalyptic number.

2140142311 is a deficient number, since it is larger than the sum of its proper divisors (141156889).

2140142311 is a wasteful number, since it uses less digits than its factorization.

2140142311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425909.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2140142311 is about 46261.6721595750. The cubic root of 2140142311 is about 1288.6873073784.

Adding to 2140142311 its reverse (1132410412), we get a palindrome (3272552723).

The spelling of 2140142311 in words is "two billion, one hundred forty million, one hundred forty-two thousand, three hundred eleven".

Divisors: 1 19 79 1501 1425811 27090409 112639069 2140142311