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30233130131 = 100929963459
BaseRepresentation
bin11100001010000010…
…001111010010010011
32220000222222010210102
4130022002033102103
5443404140131011
621520000523015
72120130236351
oct341202172223
986028863712
1030233130131
11119048a5166
125a3902046b
132b0a77c019
14166b3b27d1
15bbe32973b
hex70a08f493

30233130131 has 4 divisors (see below), whose sum is σ = 30263094600. Its totient is φ = 30203165664.

The previous prime is 30233130119. The next prime is 30233130139. The reversal of 30233130131 is 13103133203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13103133203 = 113115956931.

It is a cyclic number.

It is not a de Polignac number, because 30233130131 - 234 = 13053260947 is a prime.

It is a super-2 number, since 2×302331301312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30233130139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14980721 + ... + 14982738.

It is an arithmetic number, because the mean of its divisors is an integer number (7565773650).

Almost surely, 230233130131 is an apocalyptic number.

30233130131 is a deficient number, since it is larger than the sum of its proper divisors (29964469).

30233130131 is a wasteful number, since it uses less digits than its factorization.

30233130131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29964468.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 30233130131 its reverse (13103133203), we get a palindrome (43336263334).

The spelling of 30233130131 in words is "thirty billion, two hundred thirty-three million, one hundred thirty thousand, one hundred thirty-one".

Divisors: 1 1009 29963459 30233130131