1161312363 has 8 divisors (see below), whose sum is σ = 1720462800. Its totient is φ = 774208224.

The previous prime is 1161312349. The next prime is 1161312391. The reversal of 1161312363 is 3632131611.

1161312363 is a `hidden beast` number, since 1 + 1 + 613 + 12 + 36 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1161312363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 43011569 = 1161312363 / (1 + 1 + 6 + 1 + 3 + 1 + 2 + 3 + 6 + 3).

It is not an unprimeable number, because it can be changed into a prime (1161312563) 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, 21505758 + ... + 21505811.

It is an arithmetic number, because the mean of its divisors is an integer number (215057850).

Almost surely, 2^1161312363 is an apocalyptic number.

1161312363 is a deficient number, since it is larger than the sum of its proper divisors (559150437).

1161312363 is an equidigital number, since it uses as much as digits as its factorization.

1161312363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43011578 (or 43011572 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1161312363 is about 34078.0334379788. The cubic root of 1161312363 is about 1051.1136673667.

Adding to 1161312363 its reverse (3632131611), we get a palindrome (4793443974).

The spelling of 1161312363 in words is "one billion, one hundred sixty-one million, three hundred twelve thousand, three hundred sixty-three".