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30010023331 = 191157120541
BaseRepresentation
bin11011111100101111…
…001001110110100011
32212110110011010210121
4123330233021312203
5442430031221311
621441510541111
72111450663251
oct337457116643
985413133717
1030010023331
11117aa96a782
125996367797
132aa3494472
1416498d75d1
15ba9958b71
hex6fcbc9da3

30010023331 has 4 divisors (see below), whose sum is σ = 30167144064. Its totient is φ = 29852902600.

The previous prime is 30010023259. The next prime is 30010023343. The reversal of 30010023331 is 13332001003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13332001003 = 28194729337.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30010023331 is a prime.

It is a super-2 number, since 2×300100233312 (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 (30010023361) 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, 78560080 + ... + 78560461.

It is an arithmetic number, because the mean of its divisors is an integer number (7541786016).

Almost surely, 230010023331 is an apocalyptic number.

30010023331 is a deficient number, since it is larger than the sum of its proper divisors (157120733).

30010023331 is a wasteful number, since it uses less digits than its factorization.

30010023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157120732.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 30010023331 its reverse (13332001003), we get a palindrome (43342024334).

The spelling of 30010023331 in words is "thirty billion, ten million, twenty-three thousand, three hundred thirty-one".

Divisors: 1 191 157120541 30010023331