621311454351231 has 32 divisors (see below), whose sum is σ = 949133118455808. Its totient is φ = 354146251286880.

The previous prime is 621311454351221. The next prime is 621311454351277. The reversal of 621311454351231 is 132153454113126.

It is not a de Polignac number, because 621311454351231 - 2⁴⁵ = 586127082262399 is a prime.

It is a super-2 number, since 2×621311454351231² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621311454351221) 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 31 ways as a sum of consecutive naturals, for example, 3611235 + ... + 35435348.

It is an arithmetic number, because the mean of its divisors is an integer number (29660409951744).

Almost surely, 2^{621311454351231} is an apocalyptic number.

621311454351231 is a deficient number, since it is larger than the sum of its proper divisors (327821664104577).

621311454351231 is a wasteful number, since it uses less digits than its factorization.

621311454351231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39048491.

The product of its digits is 259200, while the sum is 42.

The spelling of 621311454351231 in words is "six hundred twenty-one trillion, three hundred eleven billion, four hundred fifty-four million, three hundred fifty-one thousand, two hundred thirty-one".