1000231320 has 64 divisors (see below), whose sum is σ = 3273488640. Its totient is φ = 242480000.

The previous prime is 1000231313. The next prime is 1000231333. The reversal of 1000231320 is 231320001.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1000231296 and 1000231305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377556 + ... + 380195.

It is an arithmetic number, because the mean of its divisors is an integer number (51148260).

Almost surely, 2^1000231320 is an apocalyptic number.

1000231320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000231320 is an abundant number, since it is smaller than the sum of its proper divisors (2273257320).

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

1000231320 is a wasteful number, since it uses less digits than its factorization.

1000231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757776 (or 757772 counting only the distinct ones).

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

The square root of 1000231320 is about 31626.4338805373. The cubic root of 1000231320 is about 1000.0771007220.

Adding to 1000231320 its reverse (231320001), we get a palindrome (1231551321).

The spelling of 1000231320 in words is "one billion, two hundred thirty-one thousand, three hundred twenty".