1155303030 has 32 divisors (see below), whose sum is σ = 3168831744. Its totient is φ = 264069216.

The previous prime is 1155303029. The next prime is 1155303137. The reversal of 1155303030 is 303035511.

It is a happy number.

It is a super-2 number, since 2×1155303030² = 2669450182254361800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1155302988 and 1155303006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2750512 + ... + 2750931.

It is an arithmetic number, because the mean of its divisors is an integer number (99025992).

Almost surely, 2^1155303030 is an apocalyptic number.

1155303030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155303030 is an abundant number, since it is smaller than the sum of its proper divisors (2013528714).

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

1155303030 is a wasteful number, since it uses less digits than its factorization.

1155303030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501460.

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 1155303030 is about 33989.7488958068. The cubic root of 1155303030 is about 1049.2974983506.

Adding to 1155303030 its reverse (303035511), we get a palindrome (1458338541).

The spelling of 1155303030 in words is "one billion, one hundred fifty-five million, three hundred three thousand, thirty".