1245311304 has 64 divisors (see below), whose sum is σ = 3193344000. Its totient is φ = 404475456.

The previous prime is 1245311297. The next prime is 1245311311. The reversal of 1245311304 is 4031135421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1245311297) and next prime (1245311311).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517897 + ... + 520295.

It is an arithmetic number, because the mean of its divisors is an integer number (49896000).

Almost surely, 2^1245311304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245311304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596672000).

1245311304 is an abundant number, since it is smaller than the sum of its proper divisors (1948032696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245311304 is a wasteful number, since it uses less digits than its factorization.

1245311304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2954 (or 2950 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1245311304 is about 35288.9685879313. The cubic root of 1245311304 is about 1075.8687922450.

Adding to 1245311304 its reverse (4031135421), we get a palindrome (5276446725).

The spelling of 1245311304 in words is "one billion, two hundred forty-five million, three hundred eleven thousand, three hundred four".