1161231600 has 60 divisors (see below), whose sum is σ = 3719815736. Its totient is φ = 309661440.

The previous prime is 1161231587. The next prime is 1161231611. The reversal of 1161231600 is 61321611.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 482647 + ... + 485046.

Almost surely, 2^1161231600 is an apocalyptic number.

1161231600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161231600 is an abundant number, since it is smaller than the sum of its proper divisors (2558584136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161231600 is a wasteful number, since it uses less digits than its factorization.

1161231600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967714 (or 967703 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1161231600 is about 34076.8484458290. The cubic root of 1161231600 is about 1051.0893003765.

The spelling of 1161231600 in words is "one billion, one hundred sixty-one million, two hundred thirty-one thousand, six hundred".