231020001001 has 4 divisors (see below), whose sum is σ = 234273803904. Its totient is φ = 227766198100.

The previous prime is 231020000969. The next prime is 231020001031. The reversal of 231020001001 is 100100020132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231020001001 - 2⁵ = 231020000969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231020001031) 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, 1626901345 + ... + 1626901486.

It is an arithmetic number, because the mean of its divisors is an integer number (58568450976).

Almost surely, 2^231020001001 is an apocalyptic number.

It is an amenable number.

231020001001 is a deficient number, since it is larger than the sum of its proper divisors (3253802903).

231020001001 is an equidigital number, since it uses as much as digits as its factorization.

231020001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253802902.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 231020001001 its reverse (100100020132), we get a palindrome (331120021133).

The spelling of 231020001001 in words is "two hundred thirty-one billion, twenty million, one thousand, one".