31452530647 has 2 divisors, whose sum is σ = 31452530648. Its totient is φ = 31452530646.

The previous prime is 31452530639. The next prime is 31452530657. The reversal of 31452530647 is 74603525413.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31452530647 - 2³ = 31452530639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31452530657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15726265323 + 15726265324.

It is an arithmetic number, because the mean of its divisors is an integer number (15726265324).

Almost surely, 2^31452530647 is an apocalyptic number.

31452530647 is a deficient number, since it is larger than the sum of its proper divisors (1).

31452530647 is an equidigital number, since it uses as much as digits as its factorization.

31452530647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 31452530647 in words is "thirty-one billion, four hundred fifty-two million, five hundred thirty thousand, six hundred forty-seven".