621113443231 has 8 divisors (see below), whose sum is σ = 643306240800. Its totient is φ = 598972318560.

The previous prime is 621113443219. The next prime is 621113443243. The reversal of 621113443231 is 132344311126.

It is an interprime number because it is at equal distance from previous prime (621113443219) and next prime (621113443243).

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 621113443231 - 2⁷ = 621113443103 is a prime.

It is a super-2 number, since 2×621113443231² (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 = 621113443193 and 621113443202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621113443261) 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, 12893755 + ... + 12941836.

It is an arithmetic number, because the mean of its divisors is an integer number (80413280100).

Almost surely, 2^621113443231 is an apocalyptic number.

621113443231 is a deficient number, since it is larger than the sum of its proper divisors (22192797569).

621113443231 is a wasteful number, since it uses less digits than its factorization.

621113443231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25836449.

The product of its digits is 10368, while the sum is 31.

Adding to 621113443231 its reverse (132344311126), we get a palindrome (753457754357).

The spelling of 621113443231 in words is "six hundred twenty-one billion, one hundred thirteen million, four hundred forty-three thousand, two hundred thirty-one".