1131120031 has 8 divisors (see below), whose sum is σ = 1197337680. Its totient is φ = 1066716672.

The previous prime is 1131120017. The next prime is 1131120037. The reversal of 1131120031 is 1300211311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131120031 - 2⁷ = 1131119903 is a prime.

It is a super-2 number, since 2×1131120031² = 2558865049058881922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131119993 and 1131120020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131120037) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 452290 + ... + 454783.

It is an arithmetic number, because the mean of its divisors is an integer number (149667210).

Almost surely, 2^1131120031 is an apocalyptic number.

1131120031 is a deficient number, since it is larger than the sum of its proper divisors (66217649).

1131120031 is an equidigital number, since it uses as much as digits as its factorization.

1131120031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907145.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1131120031 is about 33632.1279582485. The cubic root of 1131120031 is about 1041.9244541662.

Adding to 1131120031 its reverse (1300211311), we get a palindrome (2431331342).

The spelling of 1131120031 in words is "one billion, one hundred thirty-one million, one hundred twenty thousand, thirty-one".