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13121502023 = 729893492081
BaseRepresentation
bin11000011100001101…
…00011101101000111
31020212110102100220102
430032012203231013
5203333101031043
610010011154315
7643106632640
oct141606435507
936773370812
1013121502023
115623822753
12266244599b
1313116034a6
148c69566c7
1551be526b8
hex30e1a3b47

13121502023 has 32 divisors (see below), whose sum is σ = 15739920000. Its totient is φ = 10701250560.

The previous prime is 13121502007. The next prime is 13121502041. The reversal of 13121502023 is 32020512131.

13121502023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13121502023 - 24 = 13121502007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13121501986 and 13121502004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121502223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6304343 + ... + 6306423.

It is an arithmetic number, because the mean of its divisors is an integer number (491872500).

Almost surely, 213121502023 is an apocalyptic number.

13121502023 is a deficient number, since it is larger than the sum of its proper divisors (2618417977).

13121502023 is a wasteful number, since it uses less digits than its factorization.

13121502023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555.

The product of its (nonzero) digits is 360, while the sum is 20.

The spelling of 13121502023 in words is "thirteen billion, one hundred twenty-one million, five hundred two thousand, twenty-three".

Divisors: 1 7 29 89 203 349 623 2081 2443 2581 10121 14567 18067 31061 60349 70847 185209 217427 422443 726269 900769 1296463 5083883 5371061 6305383 21061801 37597427 64637941 147432607 452465587 1874500289 13121502023