31421015520607 has 2 divisors, whose sum is σ = 31421015520608. Its totient is φ = 31421015520606.

The previous prime is 31421015520527. The next prime is 31421015520619. The reversal of 31421015520607 is 70602551012413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31421015520607 - 2¹¹ = 31421015518559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31421015520707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15710507760303 + 15710507760304.

It is an arithmetic number, because the mean of its divisors is an integer number (15710507760304).

Almost surely, 2^{31421015520607} is an apocalyptic number.

31421015520607 is a deficient number, since it is larger than the sum of its proper divisors (1).

31421015520607 is an equidigital number, since it uses as much as digits as its factorization.

31421015520607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 31421015520607 in words is "thirty-one trillion, four hundred twenty-one billion, fifteen million, five hundred twenty thousand, six hundred seven".