31405042223041 has 4 divisors (see below), whose sum is σ = 31414243821012. Its totient is φ = 31395840625072.

The previous prime is 31405042223029. The next prime is 31405042223057. The reversal of 31405042223041 is 14032224050413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26324544255025 + 5080497968016 = 5130745^2 + 2253996^2 .

It is a cyclic number.

It is not a de Polignac number, because 31405042223041 - 2⁷ = 31405042222913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31405042222994 and 31405042223012.

It is not an unprimeable number, because it can be changed into a prime (31405042223941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4600793866 + ... + 4600800691.

It is an arithmetic number, because the mean of its divisors is an integer number (7853560955253).

Almost surely, 2^{31405042223041} is an apocalyptic number.

It is an amenable number.

31405042223041 is a deficient number, since it is larger than the sum of its proper divisors (9201597971).

31405042223041 is an equidigital number, since it uses as much as digits as its factorization.

31405042223041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9201597970.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 31405042223041 its reverse (14032224050413), we get a palindrome (45437266273454).

The spelling of 31405042223041 in words is "thirty-one trillion, four hundred five billion, forty-two million, two hundred twenty-three thousand, forty-one".