1130231540 has 12 divisors (see below), whose sum is σ = 2373486276. Its totient is φ = 452092608.

The previous prime is 1130231521. The next prime is 1130231593. The reversal of 1130231540 is 451320311.

It can be written as a sum of positive squares in 2 ways, for example, as 174927076 + 955304464 = 13226^2 + 30908^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 56511577 = 1130231540 / (1 + 1 + 3 + 0 + 2 + 3 + 1 + 5 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28255769 + ... + 28255808.

It is an arithmetic number, because the mean of its divisors is an integer number (197790523).

Almost surely, 2^1130231540 is an apocalyptic number.

1130231540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1130231540 is an abundant number, since it is smaller than the sum of its proper divisors (1243254736).

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

1130231540 is a wasteful number, since it uses less digits than its factorization.

1130231540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56511586 (or 56511584 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1130231540 is about 33618.9164013357. The cubic root of 1130231540 is about 1041.6515733137.

Adding to 1130231540 its reverse (451320311), we get a palindrome (1581551851).

The spelling of 1130231540 in words is "one billion, one hundred thirty million, two hundred thirty-one thousand, five hundred forty".