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23052031 = 137168263
BaseRepresentation
bin101011111101…
…1111011111111
31121101011102221
41113323323333
521400131111
62142030211
7366640042
oct127737377
947334387
1023052031
1112015372
127878367
134a11672
1430c0c59
152055371
hex15fbeff

23052031 has 4 divisors (see below), whose sum is σ = 23220432. Its totient is φ = 22883632.

The previous prime is 23052023. The next prime is 23052047. The reversal of 23052031 is 13025032.

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 23052031 - 23 = 23052023 is a prime.

It is a super-2 number, since 2×230520312 = 1062792266449922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23051996 and 23052014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23052011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83995 + ... + 84268.

It is an arithmetic number, because the mean of its divisors is an integer number (5805108).

Almost surely, 223052031 is an apocalyptic number.

23052031 is a deficient number, since it is larger than the sum of its proper divisors (168401).

23052031 is a wasteful number, since it uses less digits than its factorization.

23052031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168400.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 23052031 is about 4801.2530656069. The cubic root of 23052031 is about 284.6009846566.

Adding to 23052031 its reverse (13025032), we get a palindrome (36077063).

The spelling of 23052031 in words is "twenty-three million, fifty-two thousand, thirty-one".

Divisors: 1 137 168263 23052031