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14311131431 = 31953484417
BaseRepresentation
bin11010101010000001…
…01000100100100111
31100221100220210122212
431111000220210213
5213302122201211
610324025114035
71014433416152
oct152500504447
940840823585
1014311131431
116084295953
12293492891b
131470c0650c
1499a946c99
1558b5e038b
hex355028927

14311131431 has 8 divisors (see below), whose sum is σ = 14788312704. Its totient is φ = 13834920960.

The previous prime is 14311131397. The next prime is 14311131433. The reversal of 14311131431 is 13413111341.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14311131431 is a prime.

It is a super-2 number, since 2×143111314312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14311131397 and 14311131406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14311131433) 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, 212666 + ... + 271751.

It is an arithmetic number, because the mean of its divisors is an integer number (1848539088).

Almost surely, 214311131431 is an apocalyptic number.

14311131431 is a deficient number, since it is larger than the sum of its proper divisors (477181273).

14311131431 is an equidigital number, since it uses as much as digits as its factorization.

14311131431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485401.

The product of its digits is 432, while the sum is 23.

Adding to 14311131431 its reverse (13413111341), we get a palindrome (27724242772).

The spelling of 14311131431 in words is "fourteen billion, three hundred eleven million, one hundred thirty-one thousand, four hundred thirty-one".

Divisors: 1 31 953 29543 484417 15016927 461649401 14311131431