31553142013 has 2 divisors, whose sum is σ = 31553142014. Its totient is φ = 31553142012.

The previous prime is 31553142011. The next prime is 31553142031. The reversal of 31553142013 is 31024135513.

It is a happy number.

Together with next prime (31553142031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22971342969 + 8581799044 = 151563^2 + 92638^2 .

It is a cyclic number.

It is not a de Polignac number, because 31553142013 - 2¹ = 31553142011 is a prime.

Together with 31553142011, 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 (31553142011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15776571006 + 15776571007.

It is an arithmetic number, because the mean of its divisors is an integer number (15776571007).

Almost surely, 2^31553142013 is an apocalyptic number.

It is an amenable number.

31553142013 is a deficient number, since it is larger than the sum of its proper divisors (1).

31553142013 is an equidigital number, since it uses as much as digits as its factorization.

31553142013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 31553142013 its reverse (31024135513), we get a palindrome (62577277526).

The spelling of 31553142013 in words is "thirty-one billion, five hundred fifty-three million, one hundred forty-two thousand, thirteen".