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30033102031 = 38217860011
BaseRepresentation
bin11011111110000111…
…001100010011001111
32212112001120122211021
4123332013030103033
5443001433231111
621444053335011
72112151104142
oct337607142317
985461518737
1030033102031
11118119a3089
1259a2037467
132aa81b4cba
14164c9c4059
15bab9b6d71
hex6fe1cc4cf

30033102031 has 4 divisors (see below), whose sum is σ = 30040965864. Its totient is φ = 30025238200.

The previous prime is 30033101999. The next prime is 30033102053. The reversal of 30033102031 is 13020133003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30033102031 - 25 = 30033101999 is a prime.

It is a super-2 number, since 2×300331020312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30033101996 and 30033102014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30033102091) 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, 3926185 + ... + 3933826.

It is an arithmetic number, because the mean of its divisors is an integer number (7510241466).

Almost surely, 230033102031 is an apocalyptic number.

30033102031 is a deficient number, since it is larger than the sum of its proper divisors (7863833).

30033102031 is an equidigital number, since it uses as much as digits as its factorization.

30033102031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7863832.

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

Adding to 30033102031 its reverse (13020133003), we get a palindrome (43053235034).

The spelling of 30033102031 in words is "thirty billion, thirty-three million, one hundred two thousand, thirty-one".

Divisors: 1 3821 7860011 30033102031