1213023000 has 256 divisors, whose sum is σ = 4420915200. Its totient is φ = 271142400.

The previous prime is 1213022999. The next prime is 1213023073. The reversal of 1213023000 is 3203121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 986386 + ... + 987614.

It is an arithmetic number, because the mean of its divisors is an integer number (17269200).

Almost surely, 2^1213023000 is an apocalyptic number.

1213023000 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 1213023000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2210457600).

1213023000 is an abundant number, since it is smaller than the sum of its proper divisors (3207892200).

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

1213023000 is a wasteful number, since it uses less digits than its factorization.

1213023000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307 (or 1293 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1213023000 is about 34828.4797256498. The cubic root of 1213023000 is about 1066.4889135226.

Adding to 1213023000 its reverse (3203121), we get a palindrome (1216226121).

The spelling of 1213023000 in words is "one billion, two hundred thirteen million, twenty-three thousand".