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234115121 = 613381917
BaseRepresentation
bin11011111010001…
…01000000110001
3121022112021120102
431331011000301
5434413140441
635121522145
75541642242
oct1575050061
9538467512
10234115121
11110174179
12664a3355
1339670376
1423142cc9
151584769b
hexdf45031

234115121 has 4 divisors (see below), whose sum is σ = 234497652. Its totient is φ = 233732592.

The previous prime is 234115111. The next prime is 234115171. The reversal of 234115121 is 121511432.

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 41460721 + 192654400 = 6439^2 + 13880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-234115121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234115093 and 234115102.

It is not an unprimeable number, because it can be changed into a prime (234115111) 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, 190346 + ... + 191571.

It is an arithmetic number, because the mean of its divisors is an integer number (58624413).

Almost surely, 2234115121 is an apocalyptic number.

It is an amenable number.

234115121 is a deficient number, since it is larger than the sum of its proper divisors (382531).

234115121 is an equidigital number, since it uses as much as digits as its factorization.

234115121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382530.

The product of its digits is 240, while the sum is 20.

The square root of 234115121 is about 15300.8209256889. The cubic root of 234115121 is about 616.3250528012.

Adding to 234115121 its reverse (121511432), we get a palindrome (355626553).

The spelling of 234115121 in words is "two hundred thirty-four million, one hundred fifteen thousand, one hundred twenty-one".

Divisors: 1 613 381917 234115121