1131906120 has 32 divisors (see below), whose sum is σ = 3395718720. Its totient is φ = 301841600.

The previous prime is 1131906089. The next prime is 1131906161. The reversal of 1131906120 is 216091311.

It is a super-2 number, since 2×1131906120² = 2562422928986908800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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, 4716156 + ... + 4716395.

It is an arithmetic number, because the mean of its divisors is an integer number (106116210).

Almost surely, 2^1131906120 is an apocalyptic number.

1131906120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131906120 is an abundant number, since it is smaller than the sum of its proper divisors (2263812600).

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

1131906120 is a wasteful number, since it uses less digits than its factorization.

1131906120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9432565 (or 9432561 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1131906120 is about 33643.8125069083. The cubic root of 1131906120 is about 1042.1657653348.

Adding to 1131906120 its reverse (216091311), we get a palindrome (1347997431).

The spelling of 1131906120 in words is "one billion, one hundred thirty-one million, nine hundred six thousand, one hundred twenty".