31040323305 has 32 divisors (see below), whose sum is σ = 50103091200. Its totient is φ = 16409131200.

The previous prime is 31040323291. The next prime is 31040323397. The reversal of 31040323305 is 50332304013.

It is a happy number.

It is not a de Polignac number, because 31040323305 - 2⁶ = 31040323241 is a prime.

It is a super-2 number, since 2×31040323305² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1033896 + ... + 1063494.

It is an arithmetic number, because the mean of its divisors is an integer number (1565721600).

Almost surely, 2^31040323305 is an apocalyptic number.

It is an amenable number.

31040323305 is a deficient number, since it is larger than the sum of its proper divisors (19062767895).

31040323305 is a wasteful number, since it uses less digits than its factorization.

31040323305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30221.

The product of its (nonzero) digits is 3240, while the sum is 24.

Adding to 31040323305 its reverse (50332304013), we get a palindrome (81372627318).

The spelling of 31040323305 in words is "thirty-one billion, forty million, three hundred twenty-three thousand, three hundred five".