31818033037 has 12 divisors (see below), whose sum is σ = 38289119580. Its totient is φ = 26332164096.

The previous prime is 31818033031. The next prime is 31818033041. The reversal of 31818033037 is 73033081813.

It can be written as a sum of positive squares in 2 ways, for example, as 23120418916 + 8697614121 = 152054^2 + 93261^2 .

It is not a de Polignac number, because 31818033037 - 2³ = 31818033029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31818032987 and 31818033005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31818033031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11194228 + ... + 11197069.

It is an arithmetic number, because the mean of its divisors is an integer number (3190759965).

Almost surely, 2^31818033037 is an apocalyptic number.

It is an amenable number.

31818033037 is a deficient number, since it is larger than the sum of its proper divisors (6471086543).

31818033037 is a wasteful number, since it uses less digits than its factorization.

31818033037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22391340 (or 22391333 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 31818033037 in words is "thirty-one billion, eight hundred eighteen million, thirty-three thousand, thirty-seven".