31110113133 has 18 divisors (see below), whose sum is σ = 49393376942. Its totient is φ = 18854613360.

The previous prime is 31110113113. The next prime is 31110113141. The reversal of 31110113133 is 33131101113.

It can be written as a sum of positive squares in only one way, i.e., 20379846564 + 10730266569 = 142758^2 + 103587^2 .

It is not a de Polignac number, because 31110113133 - 2¹⁷ = 31109982061 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 (31110113113) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14282710 + ... + 14284887.

Almost surely, 2^31110113133 is an apocalyptic number.

31110113133 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31110113133 is a deficient number, since it is larger than the sum of its proper divisors (18283263809).

31110113133 is a wasteful number, since it uses less digits than its factorization.

31110113133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28567625 (or 28567611 counting only the distinct ones).

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

Adding to 31110113133 its reverse (33131101113), we get a palindrome (64241214246).

The spelling of 31110113133 in words is "thirty-one billion, one hundred ten million, one hundred thirteen thousand, one hundred thirty-three".