1000231872 has 28 divisors (see below), whose sum is σ = 2646447336. Its totient is φ = 333410560.

The previous prime is 1000231871. The next prime is 1000231879. The reversal of 1000231872 is 2781320001.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000231871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2604579 + ... + 2604962.

Almost surely, 2^1000231872 is an apocalyptic number.

1000231872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000231872 is an abundant number, since it is smaller than the sum of its proper divisors (1646215464).

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

1000231872 is an equidigital number, since it uses as much as digits as its factorization.

1000231872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5209556 (or 5209546 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1000231872 is about 31626.4426074132. The cubic root of 1000231872 is about 1000.0772846936.

Adding to 1000231872 its reverse (2781320001), we get a palindrome (3781551873).

The spelling of 1000231872 in words is "one billion, two hundred thirty-one thousand, eight hundred seventy-two".