1231023300 has 288 divisors, whose sum is σ = 4155984000. Its totient is φ = 278691840.

The previous prime is 1231023271. The next prime is 1231023301. The reversal of 1231023300 is 33201321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1231023300.

It is not an unprimeable number, because it can be changed into a prime (1231023301) 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 95 ways as a sum of consecutive naturals, for example, 2741476 + ... + 2741924.

It is an arithmetic number, because the mean of its divisors is an integer number (14430500).

Almost surely, 2^1231023300 is an apocalyptic number.

1231023300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231023300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2077992000).

1231023300 is an abundant number, since it is smaller than the sum of its proper divisors (2924960700).

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

1231023300 is a wasteful number, since it uses less digits than its factorization.

1231023300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1231023300 is about 35085.9416290913. The cubic root of 1231023300 is about 1071.7383162869.

Adding to 1231023300 its reverse (33201321), we get a palindrome (1264224621).

The spelling of 1231023300 in words is "one billion, two hundred thirty-one million, twenty-three thousand, three hundred".