1133131631 has 4 divisors (see below), whose sum is σ = 1137833664. Its totient is φ = 1128429600.

The previous prime is 1133131621. The next prime is 1133131661. The reversal of 1133131631 is 1361313311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1133131631 is a prime.

It is a super-2 number, since 2×1133131631² = 2567974586345440322, 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 = 1133131597 and 1133131606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133131621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2350655 + ... + 2351136.

It is an arithmetic number, because the mean of its divisors is an integer number (284458416).

Almost surely, 2^1133131631 is an apocalyptic number.

1133131631 is a deficient number, since it is larger than the sum of its proper divisors (4702033).

1133131631 is an equidigital number, since it uses as much as digits as its factorization.

1133131631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4702032.

The product of its digits is 486, while the sum is 23.

The square root of 1133131631 is about 33662.0206018593. The cubic root of 1133131631 is about 1042.5417461483.

Adding to 1133131631 its reverse (1361313311), we get a palindrome (2494444942).

The spelling of 1133131631 in words is "one billion, one hundred thirty-three million, one hundred thirty-one thousand, six hundred thirty-one".