Search a number
-
+
2997311789 = 7142215659
BaseRepresentation
bin1011001010100111…
…0101100100101101
321201212222012210202
42302221311210231
522114302434124
61213230443245
7134163505223
oct26251654455
97655865722
102997311789
1112a89a478a
126b7963525
13389c82a94
14206106b13
151282125ae
hexb2a7592d

2997311789 has 4 divisors (see below), whose sum is σ = 3039527520. Its totient is φ = 2955096060.

The previous prime is 2997311773. The next prime is 2997311819. The reversal of 2997311789 is 9871137992.

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 2997311789 - 24 = 2997311773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2997311719) 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 3 ways as a sum of consecutive naturals, for example, 21107759 + ... + 21107900.

It is an arithmetic number, because the mean of its divisors is an integer number (759881880).

Almost surely, 22997311789 is an apocalyptic number.

It is an amenable number.

2997311789 is a deficient number, since it is larger than the sum of its proper divisors (42215731).

2997311789 is an equidigital number, since it uses as much as digits as its factorization.

2997311789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42215730.

The product of its digits is 1714608, while the sum is 56.

The square root of 2997311789 is about 54747.7103539500. The cubic root of 2997311789 is about 1441.8186558875.

The spelling of 2997311789 in words is "two billion, nine hundred ninety-seven million, three hundred eleven thousand, seven hundred eighty-nine".

Divisors: 1 71 42215659 2997311789