31431054352 has 20 divisors (see below), whose sum is σ = 61092238780. Its totient is φ = 15665315328.

The previous prime is 31431054341. The next prime is 31431054353. The reversal of 31431054352 is 25345013413.

It can be written as a sum of positive squares in 2 ways, for example, as 12116725776 + 19314328576 = 110076^2 + 138976^2 .

It is a super-2 number, since 2×31431054352² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31431054353) 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 3 ways as a sum of consecutive naturals, for example, 3133077 + ... + 3143092.

It is an arithmetic number, because the mean of its divisors is an integer number (3054611939).

Almost surely, 2^31431054352 is an apocalyptic number.

It is an amenable number.

31431054352 is a deficient number, since it is larger than the sum of its proper divisors (29661184428).

31431054352 is a wasteful number, since it uses less digits than its factorization.

31431054352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276490 (or 6276484 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 31431054352 its reverse (25345013413), we get a palindrome (56776067765).

The spelling of 31431054352 in words is "thirty-one billion, four hundred thirty-one million, fifty-four thousand, three hundred fifty-two".