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190310023 = 1931973331
BaseRepresentation
bin10110101011111…
…10011010000111
3111021002202021101
423111332122013
5342204410043
630515000531
74500415501
oct1325763207
9437082241
10190310023
1198474812
1253899147
13305738a7
141b3bcd71
1511a9324d
hexb57e687

190310023 has 16 divisors (see below), whose sum is σ = 208983040. Its totient is φ = 172627200.

The previous prime is 190310017. The next prime is 190310041. The reversal of 190310023 is 320013091.

It is a cyclic number.

It is not a de Polignac number, because 190310023 - 225 = 156755591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190310063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55468 + ... + 58798.

It is an arithmetic number, because the mean of its divisors is an integer number (13061440).

Almost surely, 2190310023 is an apocalyptic number.

190310023 is a deficient number, since it is larger than the sum of its proper divisors (18673017).

190310023 is a wasteful number, since it uses less digits than its factorization.

190310023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 190310023 is about 13795.2898845947. The cubic root of 190310023 is about 575.2022204926.

The spelling of 190310023 in words is "one hundred ninety million, three hundred ten thousand, twenty-three".

Divisors: 1 19 31 97 589 1843 3007 3331 57133 63289 103261 323107 1961959 6139033 10016317 190310023