31424044481 has 2 divisors, whose sum is σ = 31424044482. Its totient is φ = 31424044480.

The previous prime is 31424044403. The next prime is 31424044507. The reversal of 31424044481 is 18444042413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19626609025 + 11797435456 = 140095^2 + 108616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31424044481 is a prime.

It is a super-2 number, since 2×31424044481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31424044181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15712022240 + 15712022241.

It is an arithmetic number, because the mean of its divisors is an integer number (15712022241).

Almost surely, 2^31424044481 is an apocalyptic number.

It is an amenable number.

31424044481 is a deficient number, since it is larger than the sum of its proper divisors (1).

31424044481 is an equidigital number, since it uses as much as digits as its factorization.

31424044481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 35.

Adding to 31424044481 its reverse (18444042413), we get a palindrome (49868086894).

The spelling of 31424044481 in words is "thirty-one billion, four hundred twenty-four million, forty-four thousand, four hundred eighty-one".