31023220005 has 48 divisors (see below), whose sum is σ = 54460014336. Its totient is φ = 16334793600.

The previous prime is 31023219991. The next prime is 31023220013. The reversal of 31023220005 is 50002232013.

It is not a de Polignac number, because 31023220005 - 2¹¹ = 31023217957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31023220005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8779219 + ... + 8782751.

It is an arithmetic number, because the mean of its divisors is an integer number (1134583632).

Almost surely, 2^31023220005 is an apocalyptic number.

It is an amenable number.

31023220005 is a deficient number, since it is larger than the sum of its proper divisors (23436794331).

31023220005 is a wasteful number, since it uses less digits than its factorization.

31023220005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978 (or 5975 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 31023220005 its reverse (50002232013), we get a palindrome (81025452018).

The spelling of 31023220005 in words is "thirty-one billion, twenty-three million, two hundred twenty thousand, five".