201319494731 has 4 divisors (see below), whose sum is σ = 202788980232. Its totient is φ = 199850009232.

The previous prime is 201319494721. The next prime is 201319494769. The reversal of 201319494731 is 137494913102.

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 201319494731 - 2¹⁰ = 201319493707 is a prime.

It is a super-2 number, since 2×201319494731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201319494721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734742545 + ... + 734742818.

It is an arithmetic number, because the mean of its divisors is an integer number (50697245058).

Almost surely, 2^201319494731 is an apocalyptic number.

201319494731 is a deficient number, since it is larger than the sum of its proper divisors (1469485501).

201319494731 is a wasteful number, since it uses less digits than its factorization.

201319494731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469485500.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 201319494731 in words is "two hundred one billion, three hundred nineteen million, four hundred ninety-four thousand, seven hundred thirty-one".