31533047453 has 2 divisors, whose sum is σ = 31533047454. Its totient is φ = 31533047452.

The previous prime is 31533047437. The next prime is 31533047461. The reversal of 31533047453 is 35474033513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23921880889 + 7611166564 = 154667^2 + 87242^2 .

It is a cyclic number.

It is not a de Polignac number, because 31533047453 - 2⁴ = 31533047437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31533047473) 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, 15766523726 + 15766523727.

It is an arithmetic number, because the mean of its divisors is an integer number (15766523727).

Almost surely, 2^31533047453 is an apocalyptic number.

It is an amenable number.

31533047453 is a deficient number, since it is larger than the sum of its proper divisors (1).

31533047453 is an equidigital number, since it uses as much as digits as its factorization.

31533047453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 38.

The spelling of 31533047453 in words is "thirty-one billion, five hundred thirty-three million, forty-seven thousand, four hundred fifty-three".