1145311140 has 24 divisors (see below), whose sum is σ = 3206871360. Its totient is φ = 305416288.

The previous prime is 1145311121. The next prime is 1145311159. The reversal of 1145311140 is 411135411.

It is an interprime number because it is at equal distance from previous prime (1145311121) and next prime (1145311159).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9544200 + ... + 9544319.

It is an arithmetic number, because the mean of its divisors is an integer number (133619640).

Almost surely, 2^1145311140 is an apocalyptic number.

1145311140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145311140 is an abundant number, since it is smaller than the sum of its proper divisors (2061560220).

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

1145311140 is a wasteful number, since it uses less digits than its factorization.

1145311140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19088531 (or 19088529 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1145311140 is about 33842.4458335978. The cubic root of 1145311140 is about 1046.2637093194.

Adding to 1145311140 its reverse (411135411), we get a palindrome (1556446551).

The spelling of 1145311140 in words is "one billion, one hundred forty-five million, three hundred eleven thousand, one hundred forty".