1131120331 has 16 divisors (see below), whose sum is σ = 1318296960. Its totient is φ = 959618880.

The previous prime is 1131120307. The next prime is 1131120337. The reversal of 1131120331 is 1330211311.

It is not a de Polignac number, because 1131120331 - 2⁵ = 1131120299 is a prime.

It is a super-2 number, since 2×1131120331² = 2558866406403099122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131120337) 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, 26386 + ... + 54391.

It is an arithmetic number, because the mean of its divisors is an integer number (82393560).

Almost surely, 2^1131120331 is an apocalyptic number.

1131120331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131120331 is a deficient number, since it is larger than the sum of its proper divisors (187176629).

1131120331 is a wasteful number, since it uses less digits than its factorization.

1131120331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80874.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1131120331 is about 33632.1324182693. The cubic root of 1131120331 is about 1041.9245462806.

Adding to 1131120331 its reverse (1330211311), we get a palindrome (2461331642).

The spelling of 1131120331 in words is "one billion, one hundred thirty-one million, one hundred twenty thousand, three hundred thirty-one".