101312643 has 16 divisors (see below), whose sum is σ = 139364096. Its totient is φ = 65435040.

The previous prime is 101312641. The next prime is 101312671. The reversal of 101312643 is 346213101.

It is not a de Polignac number, because 101312643 - 2¹ = 101312641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101312641) 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 15 ways as a sum of consecutive naturals, for example, 8130 + ... + 16392.

It is an arithmetic number, because the mean of its divisors is an integer number (8710256).

Almost surely, 2^101312643 is an apocalyptic number.

101312643 is a deficient number, since it is larger than the sum of its proper divisors (38051453).

101312643 is an equidigital number, since it uses as much as digits as its factorization.

101312643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8394.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 101312643 is about 10065.4181731312. The cubic root of 101312643 is about 466.1809777387.

Adding to 101312643 its reverse (346213101), we get a palindrome (447525744).

The spelling of 101312643 in words is "one hundred one million, three hundred twelve thousand, six hundred forty-three".