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23393031 = 322734351
BaseRepresentation
bin101100100111…
…1001100000111
31122000111012120
41121033030013
521442034111
62153221023
7402560154
oct131171407
948014176
1023393031
1112228592
127a01773
134b0093c
14316d22b
1520c1406
hex164f307

23393031 has 8 divisors (see below), whose sum is σ = 31329024. Its totient is φ = 15526200.

The previous prime is 23392987. The next prime is 23393033. The reversal of 23393031 is 13039332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23393031 - 29 = 23392519 is a prime.

It is a super-2 number, since 2×233930312 = 1094467798733922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23392992 and 23393010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23393033) 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, 16495 + ... + 17856.

It is an arithmetic number, because the mean of its divisors is an integer number (3916128).

Almost surely, 223393031 is an apocalyptic number.

23393031 is a deficient number, since it is larger than the sum of its proper divisors (7935993).

23393031 is a wasteful number, since it uses less digits than its factorization.

23393031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34581.

The product of its (nonzero) digits is 1458, while the sum is 24.

The square root of 23393031 is about 4836.6342636176. The cubic root of 23393031 is about 285.9974529905.

The spelling of 23393031 in words is "twenty-three million, three hundred ninety-three thousand, thirty-one".

Divisors: 1 3 227 681 34351 103053 7797677 23393031