31042343401 has 2 divisors, whose sum is σ = 31042343402. Its totient is φ = 31042343400.

The previous prime is 31042343389. The next prime is 31042343411. The reversal of 31042343401 is 10434324013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29661106176 + 1381237225 = 172224^2 + 37165^2 .

It is a cyclic number.

It is not a de Polignac number, because 31042343401 - 2¹¹ = 31042341353 is a prime.

It is not a weakly prime, because it can be changed into another prime (31042343411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15521171700 + 15521171701.

It is an arithmetic number, because the mean of its divisors is an integer number (15521171701).

Almost surely, 2^31042343401 is an apocalyptic number.

It is an amenable number.

31042343401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31042343401 is an equidigital number, since it uses as much as digits as its factorization.

31042343401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31042343401 its reverse (10434324013), we get a palindrome (41476667414).

The spelling of 31042343401 in words is "thirty-one billion, forty-two million, three hundred forty-three thousand, four hundred one".