31130112311 has 4 divisors (see below), whose sum is σ = 31218299952. Its totient is φ = 31041924672.

The previous prime is 31130112229. The next prime is 31130112323. The reversal of 31130112311 is 11321103113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11321103113 = 5521 ⋅2050553.

It is a cyclic number.

It is not a de Polignac number, because 31130112311 - 2²² = 31125918007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31130112311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130112361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44093291 + ... + 44093996.

It is an arithmetic number, because the mean of its divisors is an integer number (7804574988).

Almost surely, 2^31130112311 is an apocalyptic number.

31130112311 is a deficient number, since it is larger than the sum of its proper divisors (88187641).

31130112311 is an equidigital number, since it uses as much as digits as its factorization.

31130112311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88187640.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 31130112311 its reverse (11321103113), we get a palindrome (42451215424).

The spelling of 31130112311 in words is "thirty-one billion, one hundred thirty million, one hundred twelve thousand, three hundred eleven".