1245313453 has 2 divisors, whose sum is σ = 1245313454. Its totient is φ = 1245313452.

The previous prime is 1245313439. The next prime is 1245313463. The reversal of 1245313453 is 3543135421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 938993449 + 306320004 = 30643^2 + 17502^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245313453 - 2²⁹ = 708442541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245313463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622656726 + 622656727.

It is an arithmetic number, because the mean of its divisors is an integer number (622656727).

Almost surely, 2^1245313453 is an apocalyptic number.

It is an amenable number.

1245313453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245313453 is an equidigital number, since it uses as much as digits as its factorization.

1245313453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The square root of 1245313453 is about 35288.9990365269. Note that the first 3 decimals coincide. The cubic root of 1245313453 is about 1075.8694111105.

Adding to 1245313453 its reverse (3543135421), we get a palindrome (4788448874).

The spelling of 1245313453 in words is "one billion, two hundred forty-five million, three hundred thirteen thousand, four hundred fifty-three".