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23020131 = 329326189
BaseRepresentation
bin101011111010…
…0001001100011
31121022112200110
41113310021203
521343121011
62141222403
7366445041
oct127641143
947275613
1023020131
1111aa3402
127861a03
1349ccca4
1430b3391
15204aba6
hex15f4263

23020131 has 8 divisors (see below), whose sum is σ = 30799440. Its totient is φ = 15293792.

The previous prime is 23020111. The next prime is 23020181. The reversal of 23020131 is 13102032.

It is a happy number.

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 23020131 - 25 = 23020099 is a prime.

It is a super-2 number, since 2×230201312 = 1059852862514322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23020111) 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, 12216 + ... + 13973.

It is an arithmetic number, because the mean of its divisors is an integer number (3849930).

Almost surely, 223020131 is an apocalyptic number.

23020131 is a deficient number, since it is larger than the sum of its proper divisors (7779309).

23020131 is a wasteful number, since it uses less digits than its factorization.

23020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26485.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 23020131 is about 4797.9298660985. The cubic root of 23020131 is about 284.4696446394.

Adding to 23020131 its reverse (13102032), we get a palindrome (36122163).

The spelling of 23020131 in words is "twenty-three million, twenty thousand, one hundred thirty-one".

Divisors: 1 3 293 879 26189 78567 7673377 23020131