31472055493 has 2 divisors, whose sum is σ = 31472055494. Its totient is φ = 31472055492.

The previous prime is 31472055437. The next prime is 31472055617. The reversal of 31472055493 is 39455027413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31073933284 + 398122209 = 176278^2 + 19953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31472055493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31472055793) 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 as a sum of consecutive naturals, namely, 15736027746 + 15736027747.

It is an arithmetic number, because the mean of its divisors is an integer number (15736027747).

Almost surely, 2^31472055493 is an apocalyptic number.

It is an amenable number.

31472055493 is a deficient number, since it is larger than the sum of its proper divisors (1).

31472055493 is an equidigital number, since it uses as much as digits as its factorization.

31472055493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 31472055493 in words is "thirty-one billion, four hundred seventy-two million, fifty-five thousand, four hundred ninety-three".