1145201312 has 48 divisors (see below), whose sum is σ = 2313414432. Its totient is φ = 557848320.

The previous prime is 1145201279. The next prime is 1145201333. The reversal of 1145201312 is 2131025411.

It is a super-2 number, since 2×1145201312² = 2622972090013042688, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206123 + ... + 211605.

It is an arithmetic number, because the mean of its divisors is an integer number (48196134).

Almost surely, 2^1145201312 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 1145201312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156707216).

1145201312 is an abundant number, since it is smaller than the sum of its proper divisors (1168213120).

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

1145201312 is a wasteful number, since it uses less digits than its factorization.

1145201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5661 (or 5653 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1145201312 is about 33840.8231578370. The cubic root of 1145201312 is about 1046.2302649216.

Adding to 1145201312 its reverse (2131025411), we get a palindrome (3276226723).

The spelling of 1145201312 in words is "one billion, one hundred forty-five million, two hundred one thousand, three hundred twelve".