31225544349 has 16 divisors (see below), whose sum is σ = 43451735424. Its totient is φ = 19908504000.

The previous prime is 31225544341. The next prime is 31225544377. The reversal of 31225544349 is 94344552213.

It is not a de Polignac number, because 31225544349 - 2³ = 31225544341 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31225544349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31225544341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398859 + ... + 470679.

It is an arithmetic number, because the mean of its divisors is an integer number (2715733464).

Almost surely, 2^31225544349 is an apocalyptic number.

It is an amenable number.

31225544349 is a deficient number, since it is larger than the sum of its proper divisors (12226191075).

31225544349 is a wasteful number, since it uses less digits than its factorization.

31225544349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78148.

The product of its digits is 518400, while the sum is 42.

The spelling of 31225544349 in words is "thirty-one billion, two hundred twenty-five million, five hundred forty-four thousand, three hundred forty-nine".