101628631 has 4 divisors (see below), whose sum is σ = 109446232. Its totient is φ = 93811032.

The previous prime is 101628607. The next prime is 101628643. The reversal of 101628631 is 136826101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101628631 - 2¹⁵ = 101595863 is a prime.

It is a super-2 number, since 2×101628631² = 20656757277868322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101628631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101629631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3908781 + ... + 3908806.

It is an arithmetic number, because the mean of its divisors is an integer number (27361558).

Almost surely, 2^101628631 is an apocalyptic number.

101628631 is a deficient number, since it is larger than the sum of its proper divisors (7817601).

101628631 is an equidigital number, since it uses as much as digits as its factorization.

101628631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7817600.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 101628631 is about 10081.1026678633. The cubic root of 101628631 is about 466.6651381469.

The spelling of 101628631 in words is "one hundred one million, six hundred twenty-eight thousand, six hundred thirty-one".