1113431331 has 8 divisors (see below), whose sum is σ = 1562710720. Its totient is φ = 703219752.

The previous prime is 1113431279. The next prime is 1113431377. The reversal of 1113431331 is 1331343111.

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

It is not a de Polignac number, because 1113431331 - 2¹⁴ = 1113414947 is a prime.

It is a super-2 number, since 2×1113431331² = 2479458657704863122, 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 = 1113431298 and 1113431307.

It is not an unprimeable number, because it can be changed into a prime (1113431131) 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, 9766885 + ... + 9766998.

It is an arithmetic number, because the mean of its divisors is an integer number (195338840).

Almost surely, 2^1113431331 is an apocalyptic number.

1113431331 is a deficient number, since it is larger than the sum of its proper divisors (449279389).

1113431331 is a wasteful number, since it uses less digits than its factorization.

1113431331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19533905.

The product of its digits is 324, while the sum is 21.

The square root of 1113431331 is about 33368.1184815686. The cubic root of 1113431331 is about 1036.4646136725.

Adding to 1113431331 its reverse (1331343111), we get a palindrome (2444774442).

The spelling of 1113431331 in words is "one billion, one hundred thirteen million, four hundred thirty-one thousand, three hundred thirty-one".