106521631 has 8 divisors (see below), whose sum is σ = 110266880. Its totient is φ = 102822048.

The previous prime is 106521629. The next prime is 106521637. The reversal of 106521631 is 136125601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 106521631 - 2¹ = 106521629 is a prime.

It is a super-2 number, since 2×106521631² = 22693715741800322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106521596 and 106521605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106521637) 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, 6636 + ... + 16033.

It is an arithmetic number, because the mean of its divisors is an integer number (13783360).

Almost surely, 2^106521631 is an apocalyptic number.

106521631 is a deficient number, since it is larger than the sum of its proper divisors (3745249).

106521631 is a wasteful number, since it uses less digits than its factorization.

106521631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22833.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 106521631 is about 10320.9316924394. The cubic root of 106521631 is about 474.0373946060.

The spelling of 106521631 in words is "one hundred six million, five hundred twenty-one thousand, six hundred thirty-one".