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13030120031 = 28334599407
BaseRepresentation
bin11000010001010011…
…11101101001011111
31020122002110200101012
430020221331221133
5203141202320111
65552544405435
7640620123065
oct141051755137
936562420335
1013030120031
115587188045
12263791687b
1312c86b94c6
148b876a035
15513e0148b
hex308a7da5f

13030120031 has 4 divisors (see below), whose sum is σ = 13034722272. Its totient is φ = 13025517792.

The previous prime is 13030119997. The next prime is 13030120063. The reversal of 13030120031 is 13002103031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13002103031 = 19766000523.

It is a cyclic number.

It is not a de Polignac number, because 13030120031 - 218 = 13029857887 is a prime.

It is a super-2 number, since 2×130301200312 (a number of 21 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 = 13030119988 and 13030120015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13030120531) 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 3 ways as a sum of consecutive naturals, for example, 2296871 + ... + 2302536.

It is an arithmetic number, because the mean of its divisors is an integer number (3258680568).

Almost surely, 213030120031 is an apocalyptic number.

13030120031 is a deficient number, since it is larger than the sum of its proper divisors (4602241).

13030120031 is an equidigital number, since it uses as much as digits as its factorization.

13030120031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4602240.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 13030120031 its reverse (13002103031), we get a palindrome (26032223062).

The spelling of 13030120031 in words is "thirteen billion, thirty million, one hundred twenty thousand, thirty-one".

Divisors: 1 2833 4599407 13030120031