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12212302031 = 158316634639
BaseRepresentation
bin10110101111110100…
…01111000011001111
31011112002121012222122
423113322033003033
5200002322131111
65335452003155
7611426566046
oct132772170317
934462535878
1012212302031
1151a75872a6
122449a604bb
1311c8138427
1483bcc355d
154b7209cdb
hex2d7e8f0cf

12212302031 has 8 divisors (see below), whose sum is σ = 12230000640. Its totient is φ = 12194619192.

The previous prime is 12212302021. The next prime is 12212302033. The reversal of 12212302031 is 13020321221.

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-12212302031 is a prime.

It is a super-2 number, since 2×122123020312 (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 (12212302033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630210 + ... + 2634848.

It is an arithmetic number, because the mean of its divisors is an integer number (1528750080).

Almost surely, 212212302031 is an apocalyptic number.

12212302031 is a deficient number, since it is larger than the sum of its proper divisors (17698609).

12212302031 is a wasteful number, since it uses less digits than its factorization.

12212302031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7885.

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

Adding to 12212302031 its reverse (13020321221), we get a palindrome (25232623252).

The spelling of 12212302031 in words is "twelve billion, two hundred twelve million, three hundred two thousand, thirty-one".

Divisors: 1 1583 1663 4639 2632529 7343537 7714657 12212302031