1001500231 has 4 divisors (see below), whose sum is σ = 1002456000. Its totient is φ = 1000544464.

The previous prime is 1001500219. The next prime is 1001500237. The reversal of 1001500231 is 1320051001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001500231 - 2²⁷ = 867282503 is a prime.

It is a super-2 number, since 2×1001500231² = 2006005425386106722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001500237) 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, 476311 + ... + 478408.

It is an arithmetic number, because the mean of its divisors is an integer number (250614000).

Almost surely, 2^1001500231 is an apocalyptic number.

1001500231 is a deficient number, since it is larger than the sum of its proper divisors (955769).

1001500231 is an equidigital number, since it uses as much as digits as its factorization.

1001500231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955768.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1001500231 is about 31646.4884465876. The cubic root of 1001500231 is about 1000.4998271312.

Adding to 1001500231 its reverse (1320051001), we get a palindrome (2321551232).

The spelling of 1001500231 in words is "one billion, one million, five hundred thousand, two hundred thirty-one".