31000103133 has 16 divisors (see below), whose sum is σ = 44133619200. Its totient is φ = 19308454704.

The previous prime is 31000103093. The next prime is 31000103153. The reversal of 31000103133 is 33130100013.

It is not a de Polignac number, because 31000103133 - 2¹³ = 31000094941 is a prime.

It is a super-2 number, since 2×31000103133² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000103153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5221183 + ... + 5227116.

It is an arithmetic number, because the mean of its divisors is an integer number (2758351200).

Almost surely, 2^31000103133 is an apocalyptic number.

It is an amenable number.

31000103133 is a deficient number, since it is larger than the sum of its proper divisors (13133516067).

31000103133 is a wasteful number, since it uses less digits than its factorization.

31000103133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10448368.

The product of its (nonzero) digits is 81, while the sum is 15.

Adding to 31000103133 its reverse (33130100013), we get a palindrome (64130203146).

The spelling of 31000103133 in words is "thirty-one billion, one hundred three thousand, one hundred thirty-three".