1113115031 has 4 divisors (see below), whose sum is σ = 1272131472. Its totient is φ = 954098592.

The previous prime is 1113115009. The next prime is 1113115039. The reversal of 1113115031 is 1305113111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1113115031 - 2¹⁰ = 1113114007 is a prime.

It is a super-2 number, since 2×1113115031² = 2478050144476261922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113115039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79508210 + ... + 79508223.

It is an arithmetic number, because the mean of its divisors is an integer number (318032868).

Almost surely, 2^1113115031 is an apocalyptic number.

1113115031 is a deficient number, since it is larger than the sum of its proper divisors (159016441).

1113115031 is an equidigital number, since it uses as much as digits as its factorization.

1113115031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159016440.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 1113115031 is about 33363.3785909041. The cubic root of 1113115031 is about 1036.3664591968.

Adding to 1113115031 its reverse (1305113111), we get a palindrome (2418228142).

It can be divided in two parts, 11131 and 15031, that added together give a palindrome (26162).

The spelling of 1113115031 in words is "one billion, one hundred thirteen million, one hundred fifteen thousand, thirty-one".