1113231031 has 8 divisors (see below), whose sum is σ = 1218342528. Its totient is φ = 1008771000.

The previous prime is 1113231019. The next prime is 1113231047. The reversal of 1113231031 is 1301323111.

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 1113231031 - 2⁷ = 1113230903 is a prime.

It is a super-2 number, since 2×1113231031² = 2478566656762645922, 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 = 1113230996 and 1113231014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113231011) 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, 159285 + ... + 166126.

It is an arithmetic number, because the mean of its divisors is an integer number (152292816).

Almost surely, 2^1113231031 is an apocalyptic number.

1113231031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1113231031 is a deficient number, since it is larger than the sum of its proper divisors (105111497).

1113231031 is a wasteful number, since it uses less digits than its factorization.

1113231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325733.

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

The square root of 1113231031 is about 33365.1169786650. The cubic root of 1113231031 is about 1036.4024585709.

Adding to 1113231031 its reverse (1301323111), we get a palindrome (2414554142).

The spelling of 1113231031 in words is "one billion, one hundred thirteen million, two hundred thirty-one thousand, thirty-one".