1131563213 has 8 divisors (see below), whose sum is σ = 1242297120. Its totient is φ = 1022140080.

The previous prime is 1131563207. The next prime is 1131563219. The reversal of 1131563213 is 3123651311.

It is an interprime number because it is at equal distance from previous prime (1131563207) and next prime (1131563219).

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 1131563213 - 2¹⁰ = 1131562189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131563219) 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, 325883 + ... + 329336.

It is an arithmetic number, because the mean of its divisors is an integer number (155287140).

Almost surely, 2^1131563213 is an apocalyptic number.

It is an amenable number.

1131563213 is a deficient number, since it is larger than the sum of its proper divisors (110733907).

1131563213 is a wasteful number, since it uses less digits than its factorization.

1131563213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655387.

The product of its digits is 1620, while the sum is 26.

The square root of 1131563213 is about 33638.7159832239. The cubic root of 1131563213 is about 1042.0605145478.

The spelling of 1131563213 in words is "one billion, one hundred thirty-one million, five hundred sixty-three thousand, two hundred thirteen".