101616631 has 2 divisors, whose sum is σ = 101616632. Its totient is φ = 101616630.

The previous prime is 101616629. The next prime is 101616677. The reversal of 101616631 is 136616101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101616631 - 2¹ = 101616629 is a prime.

It is a super-2 number, since 2×101616631² = 20651879391580322, which contains 22 as substring.

Together with 101616629, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 101616596 and 101616605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101616601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50808315 + 50808316.

It is an arithmetic number, because the mean of its divisors is an integer number (50808316).

Almost surely, 2^101616631 is an apocalyptic number.

101616631 is a deficient number, since it is larger than the sum of its proper divisors (1).

101616631 is an equidigital number, since it uses as much as digits as its factorization.

101616631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 101616631 is about 10080.5074773049. The cubic root of 101616631 is about 466.6467699567.

The spelling of 101616631 in words is "one hundred one million, six hundred sixteen thousand, six hundred thirty-one".