1345223252 has 12 divisors (see below), whose sum is σ = 2380592340. Its totient is φ = 665054016.

The previous prime is 1345223251. The next prime is 1345223267. The reversal of 1345223252 is 2523225431.

It can be written as a sum of positive squares in 2 ways, for example, as 899760016 + 445463236 = 29996^2 + 21106^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345223251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1889003 + ... + 1889714.

It is an arithmetic number, because the mean of its divisors is an integer number (198382695).

Almost surely, 2^1345223252 is an apocalyptic number.

It is an amenable number.

1345223252 is a deficient number, since it is larger than the sum of its proper divisors (1035369088).

1345223252 is a wasteful number, since it uses less digits than its factorization.

1345223252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778810 (or 3778808 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 1345223252 is about 36677.2852321433. The cubic root of 1345223252 is about 1103.9043765196.

Adding to 1345223252 its reverse (2523225431), we get a palindrome (3868448683).

The spelling of 1345223252 in words is "one billion, three hundred forty-five million, two hundred twenty-three thousand, two hundred fifty-two".