1253345213 has 8 divisors (see below), whose sum is σ = 1329627960. Its totient is φ = 1177346560.

The previous prime is 1253345161. The next prime is 1253345227. The reversal of 1253345213 is 3125433521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 257185369 + 996159844 = 16037^2 + 31562^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253345213 - 2¹⁰ = 1253344189 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 (1253345413) 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 7 ways as a sum of consecutive naturals, for example, 61898 + ... + 79611.

It is an arithmetic number, because the mean of its divisors is an integer number (166203495).

Almost surely, 2^1253345213 is an apocalyptic number.

It is an amenable number.

1253345213 is a deficient number, since it is larger than the sum of its proper divisors (76282747).

1253345213 is a wasteful number, since it uses less digits than its factorization.

1253345213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142047.

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

The square root of 1253345213 is about 35402.6159061728. The cubic root of 1253345213 is about 1078.1774281336.

Adding to 1253345213 its reverse (3125433521), we get a palindrome (4378778734).

The spelling of 1253345213 in words is "one billion, two hundred fifty-three million, three hundred forty-five thousand, two hundred thirteen".