621001324631 has 8 divisors (see below), whose sum is σ = 631207222800. Its totient is φ = 610877401920.

The previous prime is 621001324609. The next prime is 621001324673. The reversal of 621001324631 is 136423100126.

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 621001324631 - 2³⁸ = 346123417687 is a prime.

It is a super-2 number, since 2×621001324631² (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 = 621001324594 and 621001324603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621001327631) 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, 20478590 + ... + 20508891.

It is an arithmetic number, because the mean of its divisors is an integer number (78900902850).

Almost surely, 2^621001324631 is an apocalyptic number.

621001324631 is a deficient number, since it is larger than the sum of its proper divisors (10205898169).

621001324631 is a wasteful number, since it uses less digits than its factorization.

621001324631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40987729.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 621001324631 its reverse (136423100126), we get a palindrome (757424424757).

The spelling of 621001324631 in words is "six hundred twenty-one billion, one million, three hundred twenty-four thousand, six hundred thirty-one".