31634604420253 has 2 divisors, whose sum is σ = 31634604420254. Its totient is φ = 31634604420252.

The previous prime is 31634604420241. The next prime is 31634604420277. The reversal of 31634604420253 is 35202440643613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30212149847364 + 1422454572889 = 5496558^2 + 1192667^2 .

It is an emirp because it is prime and its reverse (35202440643613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31634604420253 - 2²⁹ = 31634067549341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31634604420233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15817302210126 + 15817302210127.

It is an arithmetic number, because the mean of its divisors is an integer number (15817302210127).

Almost surely, 2^{31634604420253} is an apocalyptic number.

It is an amenable number.

31634604420253 is a deficient number, since it is larger than the sum of its proper divisors (1).

31634604420253 is an equidigital number, since it uses as much as digits as its factorization.

31634604420253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 31634604420253 in words is "thirty-one trillion, six hundred thirty-four billion, six hundred four million, four hundred twenty thousand, two hundred fifty-three".