101254312345 has 4 divisors (see below), whose sum is σ = 121505174820. Its totient is φ = 81003449872.

The previous prime is 101254312343. The next prime is 101254312351. The reversal of 101254312345 is 543213452101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20673838656 + 80580473689 = 143784^2 + 283867^2 .

It is a cyclic number.

It is not a de Polignac number, because 101254312345 - 2¹ = 101254312343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101254312343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10125431230 + ... + 10125431239.

It is an arithmetic number, because the mean of its divisors is an integer number (30376293705).

Almost surely, 2^101254312345 is an apocalyptic number.

It is an amenable number.

101254312345 is a deficient number, since it is larger than the sum of its proper divisors (20250862475).

101254312345 is an equidigital number, since it uses as much as digits as its factorization.

101254312345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20250862474.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 101254312345 its reverse (543213452101), we get a palindrome (644467764446).

The spelling of 101254312345 in words is "one hundred one billion, two hundred fifty-four million, three hundred twelve thousand, three hundred forty-five".