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12153131 = 233714281
BaseRepresentation
bin101110010111…
…000100101011
3211212102221222
4232113010223
511102400011
61112252255
7205204604
oct56270453
924772858
1012153131
116950911
1240a108b
132696903
141884dab
151100ddb
hexb9712b

12153131 has 8 divisors (see below), whose sum is σ = 13025184. Its totient is φ = 11309760.

The previous prime is 12153121. The next prime is 12153137. The reversal of 12153131 is 13135121.

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-12153131 is a prime.

It is a super-2 number, since 2×121531312 = 295397186206322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12153137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6290 + ... + 7991.

It is an arithmetic number, because the mean of its divisors is an integer number (1628148).

Almost surely, 212153131 is an apocalyptic number.

12153131 is a deficient number, since it is larger than the sum of its proper divisors (872053).

12153131 is a wasteful number, since it uses less digits than its factorization.

12153131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14341.

The product of its digits is 90, while the sum is 17.

The square root of 12153131 is about 3486.1341052805. The cubic root of 12153131 is about 229.9125754692.

Adding to 12153131 its reverse (13135121), we get a palindrome (25288252).

The spelling of 12153131 in words is "twelve million, one hundred fifty-three thousand, one hundred thirty-one".

Divisors: 1 23 37 851 14281 328463 528397 12153131