Search a number
-
+
30313332121 = 1931027315289
BaseRepresentation
bin11100001110110100…
…001011110110011001
32220020120212211020111
4130032310023312121
5444040203111441
621531543524321
72122123033402
oct341664136631
986216784214
1030313332121
11119460a40a6
125a5ba596a1
132b21280317
141677ccc9a9
15bc63bd081
hex70ed0bd99

30313332121 has 8 divisors (see below), whose sum is σ = 30475355240. Its totient is φ = 30151360512.

The previous prime is 30313332107. The next prime is 30313332143. The reversal of 30313332121 is 12123331303.

It can be written as a sum of positive squares in 4 ways, for example, as 914457600 + 29398874521 = 30240^2 + 171461^2 .

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 30313332121 - 215 = 30313299353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30313332092 and 30313332101.

It is not an unprimeable number, because it can be changed into a prime (30313332191) 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 7 ways as a sum of consecutive naturals, for example, 1975045 + ... + 1990333.

It is an arithmetic number, because the mean of its divisors is an integer number (3809419405).

Almost surely, 230313332121 is an apocalyptic number.

It is an amenable number.

30313332121 is a deficient number, since it is larger than the sum of its proper divisors (162023119).

30313332121 is a wasteful number, since it uses less digits than its factorization.

30313332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25755.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 30313332121 its reverse (12123331303), we get a palindrome (42436663424).

The spelling of 30313332121 in words is "thirty billion, three hundred thirteen million, three hundred thirty-two thousand, one hundred twenty-one".

Divisors: 1 193 10273 15289 1982689 2950777 157063897 30313332121