1151131230 has 32 divisors (see below), whose sum is σ = 3069684000. Its totient is φ = 306968256.

The previous prime is 1151131229. The next prime is 1151131253. The reversal of 1151131230 is 321311511.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2131455 + ... + 2131994.

It is an arithmetic number, because the mean of its divisors is an integer number (95927625).

Almost surely, 2^1151131230 is an apocalyptic number.

1151131230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1151131230 is an abundant number, since it is smaller than the sum of its proper divisors (1918552770).

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

1151131230 is a wasteful number, since it uses less digits than its factorization.

1151131230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263465 (or 4263459 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1151131230 is about 33928.3248923374. The cubic root of 1151131230 is about 1048.0329704048.

Adding to 1151131230 its reverse (321311511), we get a palindrome (1472442741).

The spelling of 1151131230 in words is "one billion, one hundred fifty-one million, one hundred thirty-one thousand, two hundred thirty".