1245331312 has 40 divisors (see below), whose sum is σ = 2433953840. Its totient is φ = 617241600.

The previous prime is 1245331201. The next prime is 1245331319. The reversal of 1245331312 is 2131335421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245331319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036312 + ... + 1037512.

It is an arithmetic number, because the mean of its divisors is an integer number (60848846).

Almost surely, 2^1245331312 is an apocalyptic number.

It is an amenable number.

1245331312 is a deficient number, since it is larger than the sum of its proper divisors (1188622528).

1245331312 is a wasteful number, since it uses less digits than its factorization.

1245331312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721 (or 1715 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 1245331312 is about 35289.2520748173. The cubic root of 1245331312 is about 1075.8745540888.

Adding to 1245331312 its reverse (2131335421), we get a palindrome (3376666733).

The spelling of 1245331312 in words is "one billion, two hundred forty-five million, three hundred thirty-one thousand, three hundred twelve".