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31130083 is a prime number
BaseRepresentation
bin111011011000…
…0000111100011
32011120120110001
41312300013203
530432130313
63031120431
7525413155
oct166600743
964516401
1031130083
1116632546
12a513117
1365ac48a
hex1db01e3

31130083 has 2 divisors, whose sum is σ = 31130084. Its totient is φ = 31130082.

The previous prime is 31130081. The next prime is 31130087. The reversal of 31130083 is 38003113.

It is a weak prime.

It is an emirp because it is prime and its reverse (38003113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31130083 - 21 = 31130081 is a prime.

Together with 31130081, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31130083.

It is not a weakly prime, because it can be changed into another prime (31130081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565041 + 15565042.

It is an arithmetic number, because the mean of its divisors is an integer number (15565042).

Almost surely, 231130083 is an apocalyptic number.

31130083 is a deficient number, since it is larger than the sum of its proper divisors (1).

31130083 is an equidigital number, since it uses as much as digits as its factorization.

31130083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 31130083 is about 5579.4339318608. The cubic root of 31130083 is about 314.5768501488.

Adding to 31130083 its reverse (38003113), we get a palindrome (69133196).

The spelling of 31130083 in words is "thirty-one million, one hundred thirty thousand, eighty-three".