4221531023 has 8 divisors (see below), whose sum is σ = 4312267968. Its totient is φ = 4130832384.

The previous prime is 4221531019. The next prime is 4221531049. The reversal of 4221531023 is 3201351224.

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

It is a cyclic number.

It is not a de Polignac number, because 4221531023 - 2² = 4221531019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4221531023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221531823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387215 + ... + 397967.

It is an arithmetic number, because the mean of its divisors is an integer number (539033496).

Almost surely, 2^4221531023 is an apocalyptic number.

4221531023 is a deficient number, since it is larger than the sum of its proper divisors (90736945).

4221531023 is a wasteful number, since it uses less digits than its factorization.

4221531023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19153.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 4221531023 is about 64973.3100819098. The cubic root of 4221531023 is about 1616.1809933080.

Adding to 4221531023 its reverse (3201351224), we get a palindrome (7422882247).

The spelling of 4221531023 in words is "four billion, two hundred twenty-one million, five hundred thirty-one thousand, twenty-three".