23101231001 has 4 divisors (see below), whose sum is σ = 23125781604. Its totient is φ = 23076680400.

The previous prime is 23101230983. The next prime is 23101231003. The reversal of 23101231001 is 10013210132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16211400976 + 6889830025 = 127324^2 + 83005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23101231001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23101231003) 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, 12273890 + ... + 12275771.

It is an arithmetic number, because the mean of its divisors is an integer number (5781445401).

Almost surely, 2^23101231001 is an apocalyptic number.

It is an amenable number.

23101231001 is a deficient number, since it is larger than the sum of its proper divisors (24550603).

23101231001 is an equidigital number, since it uses as much as digits as its factorization.

23101231001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24550602.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 23101231001 its reverse (10013210132), we get a palindrome (33114441133).

The spelling of 23101231001 in words is "twenty-three billion, one hundred one million, two hundred thirty-one thousand, one".