1231879600 has 90 divisors (see below), whose sum is σ = 3442844004. Its totient is φ = 422352000.

The previous prime is 1231879549. The next prime is 1231879601. The reversal of 1231879600 is 69781321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231879600.

It is not an unprimeable number, because it can be changed into a prime (1231879601) 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 17 ways as a sum of consecutive naturals, for example, 11826 + ... + 51025.

Almost surely, 2^1231879600 is an apocalyptic number.

1231879600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231879600 is an abundant number, since it is smaller than the sum of its proper divisors (2210964404).

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

1231879600 is a wasteful number, since it uses less digits than its factorization.

1231879600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62883 (or 62865 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1231879600 is about 35098.1424009875. The cubic root of 1231879600 is about 1071.9867591370.

The spelling of 1231879600 in words is "one billion, two hundred thirty-one million, eight hundred seventy-nine thousand, six hundred".