101278823 has 4 divisors (see below), whose sum is σ = 101300808. Its totient is φ = 101256840.

The previous prime is 101278819. The next prime is 101278901. The reversal of 101278823 is 328872101.

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 101278823 - 2² = 101278819 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 101278823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101278423) 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, 1136 + ... + 14277.

It is an arithmetic number, because the mean of its divisors is an integer number (25325202).

Almost surely, 2^101278823 is an apocalyptic number.

101278823 is a deficient number, since it is larger than the sum of its proper divisors (21985).

101278823 is an equidigital number, since it uses as much as digits as its factorization.

101278823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21984.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 101278823 is about 10063.7380232198. The cubic root of 101278823 is about 466.1290987402.

The spelling of 101278823 in words is "one hundred one million, two hundred seventy-eight thousand, eight hundred twenty-three".