1131317131 has 16 divisors (see below), whose sum is σ = 1335932928. Its totient is φ = 937512000.

The previous prime is 1131317129. The next prime is 1131317137. The reversal of 1131317131 is 1317131311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1131317131 - 2¹ = 1131317129 is a prime.

It is a super-2 number, since 2×1131317131² = 2559756901788142322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131317137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313071 + ... + 316663.

It is an arithmetic number, because the mean of its divisors is an integer number (83495808).

Almost surely, 2^1131317131 is an apocalyptic number.

1131317131 is a deficient number, since it is larger than the sum of its proper divisors (204615797).

1131317131 is a wasteful number, since it uses less digits than its factorization.

1131317131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082.

The product of its digits is 189, while the sum is 22.

The square root of 1131317131 is about 33635.0580644660. The cubic root of 1131317131 is about 1041.9849698135.

Adding to 1131317131 its reverse (1317131311), we get a palindrome (2448448442).

The spelling of 1131317131 in words is "one billion, one hundred thirty-one million, three hundred seventeen thousand, one hundred thirty-one".