1154331012 has 24 divisors (see below), whose sum is σ = 2711520000. Its totient is φ = 382194016.

The previous prime is 1154331011. The next prime is 1154331023. The reversal of 1154331012 is 2101334511.

It is a self number, because there is not a number n which added to its sum of digits gives 1154331012.

It is not an unprimeable number, because it can be changed into a prime (1154331011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321012 + ... + 324587.

It is an arithmetic number, because the mean of its divisors is an integer number (112980000).

Almost surely, 2^1154331012 is an apocalyptic number.

1154331012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1154331012 is an abundant number, since it is smaller than the sum of its proper divisors (1557188988).

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

1154331012 is a wasteful number, since it uses less digits than its factorization.

1154331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645755 (or 645753 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1154331012 is about 33975.4471935249. The cubic root of 1154331012 is about 1049.0031391493.

Adding to 1154331012 its reverse (2101334511), we get a palindrome (3255665523).

The spelling of 1154331012 in words is "one billion, one hundred fifty-four million, three hundred thirty-one thousand, twelve".