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12020131 is a prime number
BaseRepresentation
bin101101110110…
…100110100011
3211121200112001
4231312212203
511034121011
61105344431
7204112054
oct55664643
924550461
1012020131
11686a9a2
124038117
13264b206
14184c72b
1510c67c1
hexb769a3

12020131 has 2 divisors, whose sum is σ = 12020132. Its totient is φ = 12020130.

The previous prime is 12020119. The next prime is 12020137. The reversal of 12020131 is 13102021.

It is a strong prime.

It is an emirp because it is prime and its reverse (13102021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12020131 - 29 = 12019619 is a prime.

It is a super-2 number, since 2×120201312 = 288967098514322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12020137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010065 + 6010066.

It is an arithmetic number, because the mean of its divisors is an integer number (6010066).

Almost surely, 212020131 is an apocalyptic number.

12020131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020131 is an equidigital number, since it uses as much as digits as its factorization.

12020131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12020131 is about 3467.0060571046. The cubic root of 12020131 is about 229.0708005562.

Adding to 12020131 its reverse (13102021), we get a palindrome (25122152).

The spelling of 12020131 in words is "twelve million, twenty thousand, one hundred thirty-one".