1000111320 has 128 divisors (see below), whose sum is σ = 3590193600. Its totient is φ = 246177792.

The previous prime is 1000111283. The next prime is 1000111327. The reversal of 1000111320 is 231110001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000111327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21577 + ... + 49656.

Almost surely, 2^1000111320 is an apocalyptic number.

1000111320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000111320 is an abundant number, since it is smaller than the sum of its proper divisors (2590082280).

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

1000111320 is a wasteful number, since it uses less digits than its factorization.

1000111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71266 (or 71256 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1000111320 is about 31624.5366764479. The cubic root of 1000111320 is about 1000.0371052898.

Adding to 1000111320 its reverse (231110001), we get a palindrome (1231221321).

It can be divided in two parts, 10001 and 11320, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 1000111320 in words is "one billion, one hundred eleven thousand, three hundred twenty".