31424044405 has 32 divisors (see below), whose sum is σ = 40884086880. Its totient is φ = 23048893440.

The previous prime is 31424044403. The next prime is 31424044481. The reversal of 31424044405 is 50444042413.

It can be written as a sum of positive squares in 16 ways, for example, as 7605060849 + 23818983556 = 87207^2 + 154334^2 .

It is not a de Polignac number, because 31424044405 - 2¹ = 31424044403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31424044403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17564251 + ... + 17566039.

It is an arithmetic number, because the mean of its divisors is an integer number (1277627715).

Almost surely, 2^31424044405 is an apocalyptic number.

It is an amenable number.

31424044405 is a deficient number, since it is larger than the sum of its proper divisors (9460042475).

31424044405 is a wasteful number, since it uses less digits than its factorization.

31424044405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 31424044405 its reverse (50444042413), we get a palindrome (81868086818).

The spelling of 31424044405 in words is "thirty-one billion, four hundred twenty-four million, forty-four thousand, four hundred five".