31012040311 has 8 divisors (see below), whose sum is σ = 35444283264. Its totient is φ = 26580285240.

The previous prime is 31012040309. The next prime is 31012040321. The reversal of 31012040311 is 11304021013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31012040311 - 2¹ = 31012040309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012040321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26256 + ... + 250426.

It is an arithmetic number, because the mean of its divisors is an integer number (4430535408).

Almost surely, 2^31012040311 is an apocalyptic number.

31012040311 is a deficient number, since it is larger than the sum of its proper divisors (4432242953).

31012040311 is a wasteful number, since it uses less digits than its factorization.

31012040311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243941.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31012040311 its reverse (11304021013), we get a palindrome (42316061324).

The spelling of 31012040311 in words is "thirty-one billion, twelve million, forty thousand, three hundred eleven".