1021310400 has 504 divisors, whose sum is σ = 3950354304. Its totient is φ = 228659200.

The previous prime is 1021310351. The next prime is 1021310441. The reversal of 1021310400 is 40131201.

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 (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 35217586 + ... + 35217614.

Almost surely, 2^1021310400 is an apocalyptic number.

1021310400 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 1021310400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1975177152).

1021310400 is an abundant number, since it is smaller than the sum of its proper divisors (2929043904).

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

1021310400 is a wasteful number, since it uses less digits than its factorization.

1021310400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1021310400 is about 31957.9473683777. The cubic root of 1021310400 is about 1007.0535964639.

Adding to 1021310400 its reverse (40131201), we get a palindrome (1061441601).

The spelling of 1021310400 in words is "one billion, twenty-one million, three hundred ten thousand, four hundred".