31036345133 has 4 divisors (see below), whose sum is σ = 31046567580. Its totient is φ = 31026122688.

The previous prime is 31036345129. The next prime is 31036345141. The reversal of 31036345133 is 33154363013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23176104169 + 7860240964 = 152237^2 + 88658^2 .

It is a cyclic number.

It is not a de Polignac number, because 31036345133 - 2² = 31036345129 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 31036345133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31036345163) 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 3 ways as a sum of consecutive naturals, for example, 5106668 + ... + 5112741.

It is an arithmetic number, because the mean of its divisors is an integer number (7761641895).

Almost surely, 2^31036345133 is an apocalyptic number.

It is an amenable number.

31036345133 is a deficient number, since it is larger than the sum of its proper divisors (10222447).

31036345133 is a wasteful number, since it uses less digits than its factorization.

31036345133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10222446.

The product of its (nonzero) digits is 29160, while the sum is 32.

The spelling of 31036345133 in words is "thirty-one billion, thirty-six million, three hundred forty-five thousand, one hundred thirty-three".