1231276800 has 216 divisors, whose sum is σ = 4376931664. Its totient is φ = 303022080.

The previous prime is 1231276793. The next prime is 1231276831. The reversal of 1231276800 is 86721321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247134 + ... + 252066.

Almost surely, 2^1231276800 is an apocalyptic number.

1231276800 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 1231276800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2188465832).

1231276800 is an abundant number, since it is smaller than the sum of its proper divisors (3145654864).

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

1231276800 is a wasteful number, since it uses less digits than its factorization.

1231276800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975 (or 4956 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1231276800 is about 35089.5540011554. The cubic root of 1231276800 is about 1071.8118775851.

The spelling of 1231276800 in words is "one billion, two hundred thirty-one million, two hundred seventy-six thousand, eight hundred".