1144020312 has 48 divisors (see below), whose sum is σ = 3100060080. Its totient is φ = 381134400.

The previous prime is 1144020277. The next prime is 1144020323. The reversal of 1144020312 is 2130204411.

1144020312 is a `hidden beast` number, since 11 + 440 + 203 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192262 + ... + 198122.

It is an arithmetic number, because the mean of its divisors is an integer number (64584585).

Almost surely, 2^1144020312 is an apocalyptic number.

1144020312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1144020312 is an abundant number, since it is smaller than the sum of its proper divisors (1956039768).

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

1144020312 is a wasteful number, since it uses less digits than its factorization.

1144020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8584 (or 8577 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1144020312 is about 33823.3693176774. The cubic root of 1144020312 is about 1045.8704961735.

Adding to 1144020312 its reverse (2130204411), we get a palindrome (3274224723).

The spelling of 1144020312 in words is "one billion, one hundred forty-four million, twenty thousand, three hundred twelve".