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1312403453 is a prime number
BaseRepresentation
bin100111000111001…
…1010111111111101
310101110112000002022
41032032122333331
510141433402303
6334121205525
744344150064
oct11616327775
93343460068
101312403453
116138aa159
123076308a5
1317bb8b7ba
14c642d1db
157a340438
hex4e39affd

1312403453 has 2 divisors, whose sum is σ = 1312403454. Its totient is φ = 1312403452.

The previous prime is 1312403441. The next prime is 1312403531. The reversal of 1312403453 is 3543042131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1275704089 + 36699364 = 35717^2 + 6058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1312403453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312403423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656201726 + 656201727.

It is an arithmetic number, because the mean of its divisors is an integer number (656201727).

Almost surely, 21312403453 is an apocalyptic number.

It is an amenable number.

1312403453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312403453 is an equidigital number, since it uses as much as digits as its factorization.

1312403453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1312403453 is about 36227.1093657774. The cubic root of 1312403453 is about 1094.8529380004.

Adding to 1312403453 its reverse (3543042131), we get a palindrome (4855445584).

The spelling of 1312403453 in words is "one billion, three hundred twelve million, four hundred three thousand, four hundred fifty-three".