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BaseRepresentation
bin1011111010101000110111…
…1010111110110110000101
31201101112122002101201001101
42332222031322332312011
53204130430003131041
643510553505300101
72521406356352254
oct276521572766605
951345562351041
1013102031302021
1141a15a41120a2
121577317934631
137406932819cc
143341dab6c79b
1517ac31db8b31
hexbea8debed85

13102031302021 has 4 divisors (see below), whose sum is σ = 13115580456352. Its totient is φ = 13088482147692.

The previous prime is 13102031302001. The next prime is 13102031302057. The reversal of 13102031302021 is 12020313020131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13102031302021 - 215 = 13102031269253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13102031302021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13102031302001) 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, 6774575715 + ... + 6774577648.

It is an arithmetic number, because the mean of its divisors is an integer number (3278895114088).

Almost surely, 213102031302021 is an apocalyptic number.

It is an amenable number.

13102031302021 is a deficient number, since it is larger than the sum of its proper divisors (13549154331).

13102031302021 is an equidigital number, since it uses as much as digits as its factorization.

13102031302021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13549154330.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13102031302021 its reverse (12020313020131), we get a palindrome (25122344322152).

The spelling of 13102031302021 in words is "thirteen trillion, one hundred two billion, thirty-one million, three hundred two thousand, twenty-one".

Divisors: 1 967 13549153363 13102031302021