31012005163 has 2 divisors, whose sum is σ = 31012005164. Its totient is φ = 31012005162.

The previous prime is 31012005119. The next prime is 31012005203. The reversal of 31012005163 is 36150021013.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31012005163 - 2¹³ = 31011996971 is a prime.

It is a super-3 number, since 3×31012005163³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (31012005763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506002581 + 15506002582.

It is an arithmetic number, because the mean of its divisors is an integer number (15506002582).

Almost surely, 2^31012005163 is an apocalyptic number.

31012005163 is a deficient number, since it is larger than the sum of its proper divisors (1).

31012005163 is an equidigital number, since it uses as much as digits as its factorization.

31012005163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 31012005163 its reverse (36150021013), we get a palindrome (67162026176).

The spelling of 31012005163 in words is "thirty-one billion, twelve million, five thousand, one hundred sixty-three".