10231540221 has 8 divisors (see below), whose sum is σ = 15590918464. Its totient is φ = 5846594400.

The previous prime is 10231540213. The next prime is 10231540349. The reversal of 10231540221 is 12204513201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10231540221 - 2³ = 10231540213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 487216201 = 10231540221 / (1 + 0 + 2 + 3 + 1 + 5 + 4 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10231540621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243608080 + ... + 243608121.

It is an arithmetic number, because the mean of its divisors is an integer number (1948864808).

Almost surely, 2^10231540221 is an apocalyptic number.

It is an amenable number.

10231540221 is a deficient number, since it is larger than the sum of its proper divisors (5359378243).

10231540221 is an equidigital number, since it uses as much as digits as its factorization.

10231540221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487216211.

The product of its (nonzero) digits is 480, while the sum is 21.

The spelling of 10231540221 in words is "ten billion, two hundred thirty-one million, five hundred forty thousand, two hundred twenty-one".