1213152300 has 216 divisors, whose sum is σ = 4136985216. Its totient is φ = 296110080.

The previous prime is 1213152257. The next prime is 1213152341. The reversal of 1213152300 is 32513121.

1213152300 is a `hidden beast` number, since 1 + 213 + 152 + 300 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 565029 + ... + 567171.

Almost surely, 2^1213152300 is an apocalyptic number.

1213152300 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 1213152300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2068492608).

1213152300 is an abundant number, since it is smaller than the sum of its proper divisors (2923832916).

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

1213152300 is a wasteful number, since it uses less digits than its factorization.

1213152300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217 (or 2207 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1213152300 is about 34830.3359156928. The cubic root of 1213152300 is about 1066.5268056640.

Adding to 1213152300 its reverse (32513121), we get a palindrome (1245665421).

The spelling of 1213152300 in words is "one billion, two hundred thirteen million, one hundred fifty-two thousand, three hundred".