201317078 has 4 divisors (see below), whose sum is σ = 301975620. Its totient is φ = 100658538.

The previous prime is 201317057. The next prime is 201317089. The reversal of 201317078 is 870713102.

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

It is a self number, because there is not a number n which added to its sum of digits gives 201317078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50329268 + ... + 50329271.

It is an arithmetic number, because the mean of its divisors is an integer number (75493905).

Almost surely, 2^201317078 is an apocalyptic number.

201317078 is a deficient number, since it is larger than the sum of its proper divisors (100658542).

201317078 is a wasteful number, since it uses less digits than its factorization.

201317078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100658541.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 201317078 is about 14188.6249509951. The cubic root of 201317078 is about 586.0844597867.

It can be divided in two parts, 2013 and 17078, that added together give a palindrome (19091).

The spelling of 201317078 in words is "two hundred one million, three hundred seventeen thousand, seventy-eight".