31101103133 has 8 divisors (see below), whose sum is σ = 31476506040. Its totient is φ = 30726277120.

The previous prime is 31101103093. The next prime is 31101103139. The reversal of 31101103133 is 33130110113.

It can be written as a sum of positive squares in 4 ways, for example, as 4446622489 + 26654480644 = 66683^2 + 163262^2 .

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 31101103133 - 2¹² = 31101099037 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 (31101103139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35258 + ... + 251883.

It is an arithmetic number, because the mean of its divisors is an integer number (3934563255).

Almost surely, 2^31101103133 is an apocalyptic number.

It is an amenable number.

31101103133 is a deficient number, since it is larger than the sum of its proper divisors (375402907).

31101103133 is a wasteful number, since it uses less digits than its factorization.

31101103133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288447.

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 31101103133 its reverse (33130110113), we get a palindrome (64231213246).

The spelling of 31101103133 in words is "thirty-one billion, one hundred one million, one hundred three thousand, one hundred thirty-three".