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12313222031 = 111816184441
BaseRepresentation
bin10110111011110110…
…01101101110001111
31011210010111111012102
423131323031232033
5200204141101111
65353455025315
7614063442335
oct133573155617
934703444172
1012313222031
115249546a60
12247780b23b
1312130118c6
1484b473b55
154c0ee213b
hex2ddecdb8f

12313222031 has 8 divisors (see below), whose sum is σ = 13506821328. Its totient is φ = 11131992000.

The previous prime is 12313222013. The next prime is 12313222057. The reversal of 12313222031 is 13022231321.

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 12313222031 - 214 = 12313205647 is a prime.

It is a super-2 number, since 2×123132220312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12313221994 and 12313222012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313222091) 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, 3090230 + ... + 3094211.

It is an arithmetic number, because the mean of its divisors is an integer number (1688352666).

Almost surely, 212313222031 is an apocalyptic number.

12313222031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12313222031 is a deficient number, since it is larger than the sum of its proper divisors (1193599297).

12313222031 is a wasteful number, since it uses less digits than its factorization.

12313222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6184633.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12313222031 its reverse (13022231321), we get a palindrome (25335453352).

The spelling of 12313222031 in words is "twelve billion, three hundred thirteen million, two hundred twenty-two thousand, thirty-one".

Divisors: 1 11 181 1991 6184441 68028851 1119383821 12313222031