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2144332311 = 31164979767
BaseRepresentation
bin111111111001111…
…1110101000010111
312112102221100221020
41333303332220113
513342422113221
6552440252223
7104065344462
oct17763765027
95472840836
102144332311
11a00468670
124ba171073
132823405b4
14164b0a2d9
15c83c2ac6
hex7fcfea17

2144332311 has 8 divisors (see below), whose sum is σ = 3119028864. Its totient is φ = 1299595320.

The previous prime is 2144332291. The next prime is 2144332331. The reversal of 2144332311 is 1132334412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2144332291) and next prime (2144332331).

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

It is not a de Polignac number, because 2144332311 - 29 = 2144331799 is a prime.

It is a super-2 number, since 2×21443323112 = 9196322119997201442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144332331) 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, 32489851 + ... + 32489916.

It is an arithmetic number, because the mean of its divisors is an integer number (389878608).

Almost surely, 22144332311 is an apocalyptic number.

2144332311 is a deficient number, since it is larger than the sum of its proper divisors (974696553).

2144332311 is a wasteful number, since it uses less digits than its factorization.

2144332311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64979781.

The product of its digits is 1728, while the sum is 24.

The square root of 2144332311 is about 46306.9358843791. The cubic root of 2144332311 is about 1289.5277623666.

Adding to 2144332311 its reverse (1132334412), we get a palindrome (3276666723).

The spelling of 2144332311 in words is "two billion, one hundred forty-four million, three hundred thirty-two thousand, three hundred eleven".

Divisors: 1 3 11 33 64979767 194939301 714777437 2144332311