31423223005 has 16 divisors (see below), whose sum is σ = 39302175744. Its totient is φ = 24091453440.

The previous prime is 31423223003. The next prime is 31423223071. The reversal of 31423223005 is 50032232413.

It is not a de Polignac number, because 31423223005 - 2¹ = 31423223003 is a prime.

It is a super-2 number, since 2×31423223005² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423223003) 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 in 15 ways as a sum of consecutive naturals, for example, 968164 + ... + 1000093.

It is an arithmetic number, because the mean of its divisors is an integer number (2456385984).

Almost surely, 2^31423223005 is an apocalyptic number.

It is an amenable number.

31423223005 is a deficient number, since it is larger than the sum of its proper divisors (7878952739).

31423223005 is a wasteful number, since it uses less digits than its factorization.

31423223005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968396.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 31423223005 its reverse (50032232413), we get a palindrome (81455455418).

The spelling of 31423223005 in words is "thirty-one billion, four hundred twenty-three million, two hundred twenty-three thousand, five".