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193215023 = 2921433109
BaseRepresentation
bin10111000010000…
…11101000101111
3111110120100011222
423201003220233
5343430340043
631101133555
74534205051
oct1341035057
9443510158
10193215023
119a079341
125485a2bb
133104cc21
141b9378d1
1511e68d68
hexb843a2f

193215023 has 8 divisors (see below), whose sum is σ = 200035200. Its totient is φ = 186405408.

The previous prime is 193215007. The next prime is 193215037. The reversal of 193215023 is 320512391.

193215023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 193215023 - 24 = 193215007 is a prime.

It is a super-2 number, since 2×1932150232 = 74664090225781058, 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 = 193214983 and 193215001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193215053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60593 + ... + 63701.

It is an arithmetic number, because the mean of its divisors is an integer number (25004400).

Almost surely, 2193215023 is an apocalyptic number.

193215023 is a deficient number, since it is larger than the sum of its proper divisors (6820177).

193215023 is a wasteful number, since it uses less digits than its factorization.

193215023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 193215023 is about 13900.1806822789. The cubic root of 193215023 is about 578.1141912291.

The spelling of 193215023 in words is "one hundred ninety-three million, two hundred fifteen thousand, twenty-three".

Divisors: 1 29 2143 3109 62147 90161 6662587 193215023