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923145037 = 2387338669
BaseRepresentation
bin110111000001100…
…001001101001101
32101100001121220221
4313001201031031
53342311120122
6231334111341
731606413643
oct6701411515
92340047827
10923145037
11434100591
122191ab551
1311933b489
148a863193
155609e6c7
hex3706134d

923145037 has 4 divisors (see below), whose sum is σ = 923207580. Its totient is φ = 923082496.

The previous prime is 923145011. The next prime is 923145061. The reversal of 923145037 is 730541329.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 730541329 = 7104363047.

It can be written as a sum of positive squares in 2 ways, for example, as 121462441 + 801682596 = 11021^2 + 28314^2 .

It is a cyclic number.

It is not a de Polignac number, because 923145037 - 211 = 923142989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 923144993 and 923145011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (923145137) 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, 4539 + ... + 43207.

It is an arithmetic number, because the mean of its divisors is an integer number (230801895).

Almost surely, 2923145037 is an apocalyptic number.

It is an amenable number.

923145037 is a deficient number, since it is larger than the sum of its proper divisors (62543).

923145037 is a wasteful number, since it uses less digits than its factorization.

923145037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62542.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 923145037 is about 30383.3019436664. The cubic root of 923145037 is about 973.6958366883.

The spelling of 923145037 in words is "nine hundred twenty-three million, one hundred forty-five thousand, thirty-seven".

Divisors: 1 23873 38669 923145037