1631531116105 has 16 divisors (see below), whose sum is σ = 2136588006528. Its totient is φ = 1186142832000.

The previous prime is 1631531116087. The next prime is 1631531116123. The reversal of 1631531116105 is 5016111351361.

It is an interprime number because it is at equal distance from previous prime (1631531116087) and next prime (1631531116123).

It is not a de Polignac number, because 1631531116105 - 2⁵ = 1631531116073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5160756 + ... + 5467765.

It is an arithmetic number, because the mean of its divisors is an integer number (133536750408).

Almost surely, 2^{1631531116105} is an apocalyptic number.

It is an amenable number.

1631531116105 is a deficient number, since it is larger than the sum of its proper divisors (505056890423).

1631531116105 is a wasteful number, since it uses less digits than its factorization.

1631531116105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10631328.

The product of its (nonzero) digits is 8100, while the sum is 34.

Adding to 1631531116105 its reverse (5016111351361), we get a palindrome (6647642467466).

The spelling of 1631531116105 in words is "one trillion, six hundred thirty-one billion, five hundred thirty-one million, one hundred sixteen thousand, one hundred five".