1213352453 has 2 divisors, whose sum is σ = 1213352454. Its totient is φ = 1213352452.

The previous prime is 1213352449. The next prime is 1213352473. The reversal of 1213352453 is 3542533121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 913127524 + 300224929 = 30218^2 + 17327^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213352453 - 2² = 1213352449 is a prime.

It is a super-2 number, since 2×1213352453² = 2944448350402234418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213352473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606676226 + 606676227.

It is an arithmetic number, because the mean of its divisors is an integer number (606676227).

Almost surely, 2^1213352453 is an apocalyptic number.

It is an amenable number.

1213352453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213352453 is an equidigital number, since it uses as much as digits as its factorization.

1213352453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 1213352453 is about 34833.2090540048. The cubic root of 1213352453 is about 1066.5854563932.

Adding to 1213352453 its reverse (3542533121), we get a palindrome (4755885574).

The spelling of 1213352453 in words is "one billion, two hundred thirteen million, three hundred fifty-two thousand, four hundred fifty-three".