1312210453 has 6 divisors (see below), whose sum is σ = 1344997922. Its totient is φ = 1280203680.

The previous prime is 1312210451. The next prime is 1312210463. The reversal of 1312210453 is 3540122131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 342324004 + 969886449 = 18502^2 + 31143^2 .

It is not a de Polignac number, because 1312210453 - 2¹ = 1312210451 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 (1312210451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 388626 + ... + 391987.

Almost surely, 2^1312210453 is an apocalyptic number.

It is an amenable number.

1312210453 is a deficient number, since it is larger than the sum of its proper divisors (32787469).

1312210453 is an frugal number, since it uses more digits than its factorization.

1312210453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780695 (or 780654 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1312210453 is about 36224.4455168054. The cubic root of 1312210453 is about 1094.7992662489.

Adding to 1312210453 its reverse (3540122131), we get a palindrome (4852332584).

The spelling of 1312210453 in words is "one billion, three hundred twelve million, two hundred ten thousand, four hundred fifty-three".