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12431010103 = 103391120233
BaseRepresentation
bin10111001001111001…
…00010100100110111
31012002100010202001121
423210330202210313
5200424314310403
65413303404411
7620023561651
oct134474424467
935070122047
1012431010103
1152a9a87976
1224ab153707
131231542aa5
1485cd756d1
154cb50c3bd
hex2e4f22937

12431010103 has 4 divisors (see below), whose sum is σ = 12431233728. Its totient is φ = 12430786480.

The previous prime is 12431010101. The next prime is 12431010127. The reversal of 12431010103 is 30101013421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12431010103 - 21 = 12431010101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431010101) 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, 43275 + ... + 163507.

It is an arithmetic number, because the mean of its divisors is an integer number (3107808432).

Almost surely, 212431010103 is an apocalyptic number.

12431010103 is a deficient number, since it is larger than the sum of its proper divisors (223625).

12431010103 is a wasteful number, since it uses less digits than its factorization.

12431010103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223624.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12431010103 its reverse (30101013421), we get a palindrome (42532023524).

The spelling of 12431010103 in words is "twelve billion, four hundred thirty-one million, ten thousand, one hundred three".

Divisors: 1 103391 120233 12431010103