31452534643 has 2 divisors, whose sum is σ = 31452534644. Its totient is φ = 31452534642.

The previous prime is 31452534637. The next prime is 31452534709. The reversal of 31452534643 is 34643525413.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31452534643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31452534596 and 31452534605.

It is not a weakly prime, because it can be changed into another prime (31452534623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15726267321 + 15726267322.

It is an arithmetic number, because the mean of its divisors is an integer number (15726267322).

Almost surely, 2^31452534643 is an apocalyptic number.

31452534643 is a deficient number, since it is larger than the sum of its proper divisors (1).

31452534643 is an equidigital number, since it uses as much as digits as its factorization.

31452534643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 40.

The spelling of 31452534643 in words is "thirty-one billion, four hundred fifty-two million, five hundred thirty-four thousand, six hundred forty-three".