Search a number
-
+
23107031 = 113204487
BaseRepresentation
bin101100000100…
…1010111010111
31121110221212222
41120021113113
521403411111
62143132555
7400256303
oct130112727
947427788
1023107031
1112052722
1278a415b
134a306cc
1430d6d03
1520667db
hex16095d7

23107031 has 4 divisors (see below), whose sum is σ = 23311632. Its totient is φ = 22902432.

The previous prime is 23107013. The next prime is 23107057. The reversal of 23107031 is 13070132.

23107031 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23107031 - 214 = 23090647 is a prime.

It is a super-2 number, since 2×231070312 = 1067869763269922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23107001) 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 3 ways as a sum of consecutive naturals, for example, 102131 + ... + 102356.

It is an arithmetic number, because the mean of its divisors is an integer number (5827908).

Almost surely, 223107031 is an apocalyptic number.

23107031 is a deficient number, since it is larger than the sum of its proper divisors (204601).

23107031 is a wasteful number, since it uses less digits than its factorization.

23107031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204600.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 23107031 is about 4806.9773246813. The cubic root of 23107031 is about 284.8271487015.

Adding to 23107031 its reverse (13070132), we get a palindrome (36177163).

The spelling of 23107031 in words is "twenty-three million, one hundred seven thousand, thirty-one".

Divisors: 1 113 204487 23107031