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13213151023 = 25751413039
BaseRepresentation
bin11000100111001000…
…01010111100101111
31021002211212121200211
430103210022330233
5204030031313043
610023043403251
7645301634122
oct142344127457
937084777624
1013213151023
11567052aa26
122689083527
1313275b1b77
148d4bb23b9
15525007a9d
hex31390af2f

13213151023 has 4 divisors (see below), whose sum is σ = 13264564320. Its totient is φ = 13161737728.

The previous prime is 13213150999. The next prime is 13213151123. The reversal of 13213151023 is 32015131231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32015131231 = 263121730537.

It is a cyclic number.

It is not a de Polignac number, because 13213151023 - 233 = 4623216431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13213150985 and 13213151003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213151123) 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, 25706263 + ... + 25706776.

It is an arithmetic number, because the mean of its divisors is an integer number (3316141080).

Almost surely, 213213151023 is an apocalyptic number.

13213151023 is a deficient number, since it is larger than the sum of its proper divisors (51413297).

13213151023 is an equidigital number, since it uses as much as digits as its factorization.

13213151023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51413296.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 13213151023 its reverse (32015131231), we get a palindrome (45228282254).

The spelling of 13213151023 in words is "thirteen billion, two hundred thirteen million, one hundred fifty-one thousand, twenty-three".

Divisors: 1 257 51413039 13213151023