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2340131431 = 11578336787
BaseRepresentation
bin1000101101111011…
…1001001001100111
320001002100222211111
42023132321021213
514243033201211
61024113045451
7111663534421
oct21336711147
96032328744
102340131431
11aa0a41420
12553856887
132b3a86771
14182b17811
15da69c421
hex8b7b9267

2340131431 has 8 divisors (see below), whose sum is σ = 2553381504. Its totient is φ = 2126966520.

The previous prime is 2340131401. The next prime is 2340131459. The reversal of 2340131431 is 1341310432.

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 2340131431 - 211 = 2340129383 is a prime.

It is a super-2 number, since 2×23401314312 = 10952430228708215522, which 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 (2340131401) 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, 45220 + ... + 82006.

It is an arithmetic number, because the mean of its divisors is an integer number (319172688).

Almost surely, 22340131431 is an apocalyptic number.

2340131431 is a deficient number, since it is larger than the sum of its proper divisors (213250073).

2340131431 is a wasteful number, since it uses less digits than its factorization.

2340131431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42581.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2340131431 is about 48374.9049714829. The cubic root of 2340131431 is about 1327.6392498773.

Adding to 2340131431 its reverse (1341310432), we get a palindrome (3681441863).

The spelling of 2340131431 in words is "two billion, three hundred forty million, one hundred thirty-one thousand, four hundred thirty-one".

Divisors: 1 11 5783 36787 63613 404657 212739221 2340131431