1161313276 has 6 divisors (see below), whose sum is σ = 2032298240. Its totient is φ = 580656636.

The previous prime is 1161313267. The next prime is 1161313277. The reversal of 1161313276 is 6723131611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161313277) 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 as a sum of consecutive naturals, namely, 145164156 + ... + 145164163.

Almost surely, 2^1161313276 is an apocalyptic number.

It is an amenable number.

1161313276 is a deficient number, since it is larger than the sum of its proper divisors (870984964).

1161313276 is a wasteful number, since it uses less digits than its factorization.

1161313276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290328323 (or 290328321 counting only the distinct ones).

The product of its digits is 4536, while the sum is 31.

The square root of 1161313276 is about 34078.0468337022. The cubic root of 1161313276 is about 1051.1139428214.

Adding to 1161313276 its reverse (6723131611), we get a palindrome (7884444887).

The spelling of 1161313276 in words is "one billion, one hundred sixty-one million, three hundred thirteen thousand, two hundred seventy-six".