31130111133 has 16 divisors (see below), whose sum is σ = 50311291200. Its totient is φ = 18866733840.

The previous prime is 31130111107. The next prime is 31130111149. The reversal of 31130111133 is 33111103113.

It is not a de Polignac number, because 31130111133 - 2⁵ = 31130111101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130111183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52407298 + ... + 52407891.

It is an arithmetic number, because the mean of its divisors is an integer number (3144455700).

Almost surely, 2^31130111133 is an apocalyptic number.

31130111133 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31130111133 is a deficient number, since it is larger than the sum of its proper divisors (19181180067).

31130111133 is a wasteful number, since it uses less digits than its factorization.

31130111133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104815209 (or 104815203 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

Adding to 31130111133 its reverse (33111103113), we get a palindrome (64241214246).

The spelling of 31130111133 in words is "thirty-one billion, one hundred thirty million, one hundred eleven thousand, one hundred thirty-three".