20315134451331 has 6 divisors (see below), whose sum is σ = 29344083096380. Its totient is φ = 13543422967548.

The previous prime is 20315134451329. The next prime is 20315134451333. The reversal of 20315134451331 is 13315443151302.

20315134451331 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 5 + 134 + 4 + 513 + 3 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (20315134451329) and next prime (20315134451333).

It is not a de Polignac number, because 20315134451331 - 2¹ = 20315134451329 is a prime.

It is a super-2 number, since 2×20315134451331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20315134451333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1128618580621 + ... + 1128618580638.

Almost surely, 2^{20315134451331} is an apocalyptic number.

20315134451331 is a deficient number, since it is larger than the sum of its proper divisors (9028948645049).

20315134451331 is a wasteful number, since it uses less digits than its factorization.

20315134451331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257237161265 (or 2257237161262 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 20315134451331 in words is "twenty trillion, three hundred fifteen billion, one hundred thirty-four million, four hundred fifty-one thousand, three hundred thirty-one".