Search a number
-
+
415231161 = 3138410387
BaseRepresentation
bin11000101111111…
…110110010111001
31001221022221001220
4120233332302321
51322244344121
6105111502253
713201256322
oct3057766271
91057287056
10415231161
111a3429354
12b7087989
1368045217
143d20b449
15266c16c6
hex18bfecb9

415231161 has 4 divisors (see below), whose sum is σ = 553641552. Its totient is φ = 276820772.

The previous prime is 415231153. The next prime is 415231163. The reversal of 415231161 is 161132514.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 415231161 - 23 = 415231153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (415231163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69205191 + ... + 69205196.

It is an arithmetic number, because the mean of its divisors is an integer number (138410388).

Almost surely, 2415231161 is an apocalyptic number.

It is an amenable number.

415231161 is a deficient number, since it is larger than the sum of its proper divisors (138410391).

415231161 is a wasteful number, since it uses less digits than its factorization.

415231161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138410390.

The product of its digits is 720, while the sum is 24.

The square root of 415231161 is about 20377.2216212123. The cubic root of 415231161 is about 746.0420599113.

Adding to 415231161 its reverse (161132514), we get a palindrome (576363675).

The spelling of 415231161 in words is "four hundred fifteen million, two hundred thirty-one thousand, one hundred sixty-one".

Divisors: 1 3 138410387 415231161