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131212301 = 1112379643
BaseRepresentation
bin1111101001000…
…10010000001101
3100010220021102212
413310202100031
5232042243201
621004200205
73152200103
oct764422015
9303807385
10131212301
116807a820
1237b39065
132125151c
14135d7c73
15b7bcabb
hex7d2240d

131212301 has 8 divisors (see below), whose sum is σ = 143271264. Its totient is φ = 119175120.

The previous prime is 131212261. The next prime is 131212303. The reversal of 131212301 is 103212131.

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 131212301 - 210 = 131211277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212303) 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, 8786 + ... + 18428.

It is an arithmetic number, because the mean of its divisors is an integer number (17908908).

Almost surely, 2131212301 is an apocalyptic number.

131212301 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131212301 is a deficient number, since it is larger than the sum of its proper divisors (12058963).

131212301 is a wasteful number, since it uses less digits than its factorization.

131212301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10891.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 131212301 is about 11454.7937999774. The cubic root of 131212301 is about 508.1495170799.

Adding to 131212301 its reverse (103212131), we get a palindrome (234424432).

The spelling of 131212301 in words is "one hundred thirty-one million, two hundred twelve thousand, three hundred one".

Divisors: 1 11 1237 9643 13607 106073 11928391 131212301