1231300100 has 36 divisors (see below), whose sum is σ = 2673982500. Its totient is φ = 492140160.

The previous prime is 1231300099. The next prime is 1231300117. The reversal of 1231300100 is 10031321.

It can be written as a sum of positive squares in 6 ways, for example, as 66716224 + 1164583876 = 8168^2 + 34126^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150926 + ... + 158874.

Almost surely, 2^1231300100 is an apocalyptic number.

1231300100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231300100 is an abundant number, since it is smaller than the sum of its proper divisors (1442682400).

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

1231300100 is a wasteful number, since it uses less digits than its factorization.

1231300100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9512 (or 9505 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1231300100 is about 35089.8860072244. The cubic root of 1231300100 is about 1071.8186383338.

Adding to 1231300100 its reverse (10031321), we get a palindrome (1241331421).

The spelling of 1231300100 in words is "one billion, two hundred thirty-one million, three hundred thousand, one hundred".