231621723035 has 8 divisors (see below), whose sum is σ = 286912070016. Its totient is φ = 179320043520.

The previous prime is 231621723001. The next prime is 231621723061. The reversal of 231621723035 is 530327126132.

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

It is not a de Polignac number, because 231621723035 - 2¹⁶ = 231621657499 is a prime.

It is a super-2 number, since 2×231621723035² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231621722986 and 231621723004.

It is an unprimeable number.

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, 747166694 + ... + 747167003.

It is an arithmetic number, because the mean of its divisors is an integer number (35864008752).

Almost surely, 2^231621723035 is an apocalyptic number.

231621723035 is a deficient number, since it is larger than the sum of its proper divisors (55290346981).

231621723035 is a wasteful number, since it uses less digits than its factorization.

231621723035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494333733.

The product of its (nonzero) digits is 45360, while the sum is 35.

Adding to 231621723035 its reverse (530327126132), we get a palindrome (761948849167).

The spelling of 231621723035 in words is "two hundred thirty-one billion, six hundred twenty-one million, seven hundred twenty-three thousand, thirty-five".