1812931606317 has 32 divisors (see below), whose sum is σ = 2610291841920. Its totient is φ = 1112605781760.

The previous prime is 1812931606267. The next prime is 1812931606349. The reversal of 1812931606317 is 7136061392181.

It is not a de Polignac number, because 1812931606317 - 2¹² = 1812931602221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812931606357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51963283 + ... + 51998159.

It is an arithmetic number, because the mean of its divisors is an integer number (81571620060).

Almost surely, 2^{1812931606317} is an apocalyptic number.

It is an amenable number.

1812931606317 is a deficient number, since it is larger than the sum of its proper divisors (797360235603).

1812931606317 is a wasteful number, since it uses less digits than its factorization.

1812931606317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38493.

The product of its (nonzero) digits is 326592, while the sum is 48.

Adding to 1812931606317 its reverse (7136061392181), we get a palindrome (8948992998498).

The spelling of 1812931606317 in words is "one trillion, eight hundred twelve billion, nine hundred thirty-one million, six hundred six thousand, three hundred seventeen".