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12331104031 = 17207716633
BaseRepresentation
bin10110111101111110…
…11011011100011111
31011211101010222200201
423132333123130133
5200223230312111
65355334204331
7614401440421
oct133677333437
934741128621
1012331104031
11525864aa74
1224817b36a7
131216932c7c
1484d9aa811
154c28756c1
hex2defdb71f

12331104031 has 4 divisors (see below), whose sum is σ = 12331837872. Its totient is φ = 12330370192.

The previous prime is 12331104029. The next prime is 12331104047. The reversal of 12331104031 is 13040113321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13040113321 = 37273498823.

It is a cyclic number.

It is not a de Polignac number, because 12331104031 - 21 = 12331104029 is a prime.

It is a super-2 number, since 2×123311040312 (a number of 21 digits) 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 (12331104131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341110 + ... + 375523.

It is an arithmetic number, because the mean of its divisors is an integer number (3082959468).

Almost surely, 212331104031 is an apocalyptic number.

12331104031 is a deficient number, since it is larger than the sum of its proper divisors (733841).

12331104031 is an equidigital number, since it uses as much as digits as its factorization.

12331104031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733840.

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

Adding to 12331104031 its reverse (13040113321), we get a palindrome (25371217352).

The spelling of 12331104031 in words is "twelve billion, three hundred thirty-one million, one hundred four thousand, thirty-one".

Divisors: 1 17207 716633 12331104031