31550440153 has 2 divisors, whose sum is σ = 31550440154. Its totient is φ = 31550440152.

The previous prime is 31550440127. The next prime is 31550440169. The reversal of 31550440153 is 35104405513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28426971609 + 3123468544 = 168603^2 + 55888^2 .

It is a cyclic number.

It is not a de Polignac number, because 31550440153 - 2²⁹ = 31013569241 is a prime.

It is not a weakly prime, because it can be changed into another prime (31550440553) 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, 15775220076 + 15775220077.

It is an arithmetic number, because the mean of its divisors is an integer number (15775220077).

Almost surely, 2^31550440153 is an apocalyptic number.

It is an amenable number.

31550440153 is a deficient number, since it is larger than the sum of its proper divisors (1).

31550440153 is an equidigital number, since it uses as much as digits as its factorization.

31550440153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 31550440153 its reverse (35104405513), we get a palindrome (66654845666).

The spelling of 31550440153 in words is "thirty-one billion, five hundred fifty million, four hundred forty thousand, one hundred fifty-three".