44420213531 has 2 divisors, whose sum is σ = 44420213532. Its totient is φ = 44420213530.

The previous prime is 44420213479. The next prime is 44420213543. The reversal of 44420213531 is 13531202444.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44420213531 - 2²² = 44416019227 is a prime.

It is a super-2 number, since 2×44420213531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44420213494 and 44420213503.

It is not a weakly prime, because it can be changed into another prime (44420213231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22210106765 + 22210106766.

It is an arithmetic number, because the mean of its divisors is an integer number (22210106766).

Almost surely, 2^44420213531 is an apocalyptic number.

44420213531 is a deficient number, since it is larger than the sum of its proper divisors (1).

44420213531 is an equidigital number, since it uses as much as digits as its factorization.

44420213531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 44420213531 its reverse (13531202444), we get a palindrome (57951415975).

The spelling of 44420213531 in words is "forty-four billion, four hundred twenty million, two hundred thirteen thousand, five hundred thirty-one".