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193142113 = 486139733
BaseRepresentation
bin10111000001100…
…01110101100001
3111110102122011121
423200301311201
5343421021423
631055412241
74533452353
oct1340616541
9443378147
10193142113
119a02958a
1254824081
1331025998
141b9190d3
1511e5245d
hexb831d61

193142113 has 4 divisors (see below), whose sum is σ = 193186708. Its totient is φ = 193097520.

The previous prime is 193142099. The next prime is 193142119. The reversal of 193142113 is 311241391.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 180418624 + 12723489 = 13432^2 + 3567^2 .

It is a cyclic number.

It is not a de Polignac number, because 193142113 - 217 = 193011041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193142119) 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 3 ways as a sum of consecutive naturals, for example, 15006 + ... + 24727.

It is an arithmetic number, because the mean of its divisors is an integer number (48296677).

Almost surely, 2193142113 is an apocalyptic number.

It is an amenable number.

193142113 is a deficient number, since it is larger than the sum of its proper divisors (44595).

193142113 is an equidigital number, since it uses as much as digits as its factorization.

193142113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44594.

The product of its digits is 648, while the sum is 25.

The square root of 193142113 is about 13897.5578070393. The cubic root of 193142113 is about 578.0414646403.

It can be divided in two parts, 1931 and 42113, that added together give a palindrome (44044).

The spelling of 193142113 in words is "one hundred ninety-three million, one hundred forty-two thousand, one hundred thirteen".

Divisors: 1 4861 39733 193142113