20531304176316 has 24 divisors (see below), whose sum is σ = 47916524049744. Its totient is φ = 6842318396160.

The previous prime is 20531304176311. The next prime is 20531304176323. The reversal of 20531304176316 is 61367140313502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20531304176311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181148815 + ... + 181262118.

It is an arithmetic number, because the mean of its divisors is an integer number (1996521835406).

Almost surely, 2^{20531304176316} is an apocalyptic number.

It is an amenable number.

20531304176316 is an abundant number, since it is smaller than the sum of its proper divisors (27385219873428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20531304176316 is a wasteful number, since it uses less digits than its factorization.

20531304176316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362415661 (or 362415659 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

Adding to 20531304176316 its reverse (61367140313502), we get a palindrome (81898444489818).

The spelling of 20531304176316 in words is "twenty trillion, five hundred thirty-one billion, three hundred four million, one hundred seventy-six thousand, three hundred sixteen".