101631043 has 4 divisors (see below), whose sum is σ = 106049808. Its totient is φ = 97212280.

The previous prime is 101631037. The next prime is 101631053. The reversal of 101631043 is 340136101.

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 101631043 - 2⁵ = 101631011 is a prime.

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 101631043.

It is not an unprimeable number, because it can be changed into a prime (101631053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2209348 + ... + 2209393.

It is an arithmetic number, because the mean of its divisors is an integer number (26512452).

Almost surely, 2^101631043 is an apocalyptic number.

101631043 is a deficient number, since it is larger than the sum of its proper divisors (4418765).

101631043 is an equidigital number, since it uses as much as digits as its factorization.

101631043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4418764.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 101631043 is about 10081.2222969241. Note that the first 4 decimals coincide. The cubic root of 101631043 is about 466.6688299786.

Adding to 101631043 its reverse (340136101), we get a palindrome (441767144).

The spelling of 101631043 in words is "one hundred one million, six hundred thirty-one thousand, forty-three".