1093531320 has 512 divisors, whose sum is σ = 4589568000. Its totient is φ = 225815040.

The previous prime is 1093531267. The next prime is 1093531331. The reversal of 1093531320 is 231353901.

It is a happy number.

1093531320 is a `hidden beast` number, since 10 + 93 + 531 + 32 + 0 = 666.

1093531320 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3303555 + ... + 3303885.

It is an arithmetic number, because the mean of its divisors is an integer number (8964000).

Almost surely, 2^1093531320 is an apocalyptic number.

1093531320 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 1093531320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2294784000).

1093531320 is an abundant number, since it is smaller than the sum of its proper divisors (3496036680).

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

1093531320 is a wasteful number, since it uses less digits than its factorization.

1093531320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 1093531320 is about 33068.5850921989. The cubic root of 1093531320 is about 1030.2526542672.

The spelling of 1093531320 in words is "one billion, ninety-three million, five hundred thirty-one thousand, three hundred twenty".