31244255133 has 16 divisors (see below), whose sum is σ = 51272624256. Its totient is φ = 16480486080.

The previous prime is 31244255117. The next prime is 31244255201. The reversal of 31244255133 is 33155244213.

It is not a de Polignac number, because 31244255133 - 2⁴ = 31244255117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31244255094 and 31244255103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31244255113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57223638 + ... + 57224183.

It is an arithmetic number, because the mean of its divisors is an integer number (3204539016).

Almost surely, 2^31244255133 is an apocalyptic number.

It is an amenable number.

31244255133 is a deficient number, since it is larger than the sum of its proper divisors (20028369123).

31244255133 is a wasteful number, since it uses less digits than its factorization.

31244255133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114447844.

The product of its digits is 43200, while the sum is 33.

Adding to 31244255133 its reverse (33155244213), we get a palindrome (64399499346).

The spelling of 31244255133 in words is "thirty-one billion, two hundred forty-four million, two hundred fifty-five thousand, one hundred thirty-three".