1327123100 has 36 divisors (see below), whose sum is σ = 2884258104. Its totient is φ = 530038080.

The previous prime is 1327123087. The next prime is 1327123103. The reversal of 1327123100 is 13217231.

It is a super-2 number, since 2×1327123100² = 3522511445107220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327123103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57899 + ... + 77501.

Almost surely, 2^1327123100 is an apocalyptic number.

1327123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1327123100 is an abundant number, since it is smaller than the sum of its proper divisors (1557135004).

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

1327123100 is a wasteful number, since it uses less digits than its factorization.

1327123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20294 (or 20287 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1327123100 is about 36429.7007948185. The cubic root of 1327123100 is about 1098.9309448268.

The spelling of 1327123100 in words is "one billion, three hundred twenty-seven million, one hundred twenty-three thousand, one hundred".