31404013063 has 2 divisors, whose sum is σ = 31404013064. Its totient is φ = 31404013062.

The previous prime is 31404012973. The next prime is 31404013073. The reversal of 31404013063 is 36031040413.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (36031040413) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31404013063 is a prime.

It is a super-2 number, since 2×31404013063² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31404013073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15702006531 + 15702006532.

It is an arithmetic number, because the mean of its divisors is an integer number (15702006532).

Almost surely, 2^31404013063 is an apocalyptic number.

31404013063 is a deficient number, since it is larger than the sum of its proper divisors (1).

31404013063 is an equidigital number, since it uses as much as digits as its factorization.

31404013063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31404013063 its reverse (36031040413), we get a palindrome (67435053476).

The spelling of 31404013063 in words is "thirty-one billion, four hundred four million, thirteen thousand, sixty-three".