31404223141 has 2 divisors, whose sum is σ = 31404223142. Its totient is φ = 31404223140.

The previous prime is 31404223139. The next prime is 31404223159. The reversal of 31404223141 is 14132240413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18849917025 + 12554306116 = 137295^2 + 112046^2 .

It is a cyclic number.

It is not a de Polignac number, because 31404223141 - 2¹ = 31404223139 is a prime.

Together with 31404223139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31404223111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15702111570 + 15702111571.

It is an arithmetic number, because the mean of its divisors is an integer number (15702111571).

Almost surely, 2^31404223141 is an apocalyptic number.

It is an amenable number.

31404223141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31404223141 is an equidigital number, since it uses as much as digits as its factorization.

31404223141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31404223141 its reverse (14132240413), we get a palindrome (45536463554).

The spelling of 31404223141 in words is "thirty-one billion, four hundred four million, two hundred twenty-three thousand, one hundred forty-one".