1131342120 has 64 divisors (see below), whose sum is σ = 3771144000. Its totient is φ = 301690944.

The previous prime is 1131342097. The next prime is 1131342127. The reversal of 1131342120 is 212431311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1131342093 and 1131342102.

It is not an unprimeable number, because it can be changed into a prime (1131342127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522690 + ... + 524849.

It is an arithmetic number, because the mean of its divisors is an integer number (58924125).

Almost surely, 2^1131342120 is an apocalyptic number.

1131342120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131342120 is an abundant number, since it is smaller than the sum of its proper divisors (2639801880).

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

1131342120 is a wasteful number, since it uses less digits than its factorization.

1131342120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047559 (or 1047549 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1131342120 is about 33635.4295349413. The cubic root of 1131342120 is about 1041.9926416885.

Adding to 1131342120 its reverse (212431311), we get a palindrome (1343773431).

The spelling of 1131342120 in words is "one billion, one hundred thirty-one million, three hundred forty-two thousand, one hundred twenty".