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12301204031 = 25149008781
BaseRepresentation
bin10110111010011010…
…10111101000111111
31011202021212220121022
423131031113220333
5200143102012111
65352345254355
7613556336414
oct133515275077
934667786538
1012301204031
115242788726
1224737943bb
13121069466c
14849a2610b
154bee1b2db
hex2dd357a3f

12301204031 has 4 divisors (see below), whose sum is σ = 12350213064. Its totient is φ = 12252195000.

The previous prime is 12301204009. The next prime is 12301204043. The reversal of 12301204031 is 13040210321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12301204031 - 210 = 12301203007 is a prime.

It is a super-2 number, since 2×123012040312 (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 (12301204081) 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, 24504140 + ... + 24504641.

It is an arithmetic number, because the mean of its divisors is an integer number (3087553266).

Almost surely, 212301204031 is an apocalyptic number.

12301204031 is a deficient number, since it is larger than the sum of its proper divisors (49009033).

12301204031 is an equidigital number, since it uses as much as digits as its factorization.

12301204031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49009032.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12301204031 its reverse (13040210321), we get a palindrome (25341414352).

The spelling of 12301204031 in words is "twelve billion, three hundred one million, two hundred four thousand, thirty-one".

Divisors: 1 251 49008781 12301204031