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131404214 = 265702107
BaseRepresentation
bin1111101010100…
…01000110110110
3100011021000200202
413311101012312
5232114413324
621012240502
73153626444
oct765210666
9304230622
10131404214
11681a0a27
1238010132
13212ba996
1413647b94
15b8098ae
hex7d511b6

131404214 has 4 divisors (see below), whose sum is σ = 197106324. Its totient is φ = 65702106.

The previous prime is 131404213. The next prime is 131404253. The reversal of 131404214 is 412404131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 412404131 = 1667247393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131404211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32851052 + ... + 32851055.

It is an arithmetic number, because the mean of its divisors is an integer number (49276581).

Almost surely, 2131404214 is an apocalyptic number.

131404214 is a deficient number, since it is larger than the sum of its proper divisors (65702110).

131404214 is an equidigital number, since it uses as much as digits as its factorization.

131404214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65702109.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 131404214 is about 11463.1677122862. The cubic root of 131404214 is about 508.3971386600.

Adding to 131404214 its reverse (412404131), we get a palindrome (543808345).

The spelling of 131404214 in words is "one hundred thirty-one million, four hundred four thousand, two hundred fourteen".

Divisors: 1 2 65702107 131404214