1131122031 has 8 divisors (see below), whose sum is σ = 1624175280. Its totient is φ = 696075072.

The previous prime is 1131122023. The next prime is 1131122051. The reversal of 1131122031 is 1302211311.

It is a happy number.

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

It is not a de Polignac number, because 1131122031 - 2³ = 1131122023 is a prime.

It is a super-2 number, since 2×1131122031² = 2558874098027129922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1131122031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131122011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14501526 + ... + 14501603.

It is an arithmetic number, because the mean of its divisors is an integer number (203021910).

Almost surely, 2^1131122031 is an apocalyptic number.

1131122031 is a deficient number, since it is larger than the sum of its proper divisors (493053249).

1131122031 is a wasteful number, since it uses less digits than its factorization.

1131122031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29003145.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1131122031 is about 33632.1576917093. The cubic root of 1131122031 is about 1041.9250682618.

Adding to 1131122031 its reverse (1302211311), we get a palindrome (2433333342).

The spelling of 1131122031 in words is "one billion, one hundred thirty-one million, one hundred twenty-two thousand, thirty-one".