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31131414133 = 591992651513
BaseRepresentation
bin11100111111100100…
…111010111001110101
32222100121020200210021
4130333210322321311
51002224120223013
622145050125141
72151315440221
oct347744727165
988317220707
1031131414133
1112225965236
126049a207b1
132c218c4611
141714803781
15c23117a8d
hex73f93ae75

31131414133 has 8 divisors (see below), whose sum is σ = 31818168000. Its totient is φ = 30449963808.

The previous prime is 31131414113. The next prime is 31131414163. The reversal of 31131414133 is 33141413113.

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-31131414133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31131414098 and 31131414107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31131414113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1314016 + ... + 1337497.

It is an arithmetic number, because the mean of its divisors is an integer number (3977271000).

Almost surely, 231131414133 is an apocalyptic number.

It is an amenable number.

31131414133 is a deficient number, since it is larger than the sum of its proper divisors (686753867).

31131414133 is a wasteful number, since it uses less digits than its factorization.

31131414133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651771.

The product of its digits is 1296, while the sum is 25.

Adding to 31131414133 its reverse (33141413113), we get a palindrome (64272827246).

The spelling of 31131414133 in words is "thirty-one billion, one hundred thirty-one million, four hundred fourteen thousand, one hundred thirty-three".

Divisors: 1 59 199 11741 2651513 156439267 527651087 31131414133