31442230553 has 2 divisors, whose sum is σ = 31442230554. Its totient is φ = 31442230552.

The previous prime is 31442230529. The next prime is 31442230627. The reversal of 31442230553 is 35503224413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25353237529 + 6088993024 = 159227^2 + 78032^2 .

It is a cyclic number.

It is not a de Polignac number, because 31442230553 - 2¹² = 31442226457 is a prime.

It is a super-2 number, since 2×31442230553² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31442430553) 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, 15721115276 + 15721115277.

It is an arithmetic number, because the mean of its divisors is an integer number (15721115277).

Almost surely, 2^31442230553 is an apocalyptic number.

It is an amenable number.

31442230553 is a deficient number, since it is larger than the sum of its proper divisors (1).

31442230553 is an equidigital number, since it uses as much as digits as its factorization.

31442230553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 31442230553 its reverse (35503224413), we get a palindrome (66945454966).

The spelling of 31442230553 in words is "thirty-one billion, four hundred forty-two million, two hundred thirty thousand, five hundred fifty-three".