2001386280731 has 8 divisors (see below), whose sum is σ = 2003810508000. Its totient is φ = 1998963039040.

The previous prime is 2001386280683. The next prime is 2001386280739. The reversal of 2001386280731 is 1370826831002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001386280731 - 2¹⁰ = 2001386279707 is a prime.

It is a super-2 number, since 2×2001386280731² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001386280739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3858725 + ... + 4346553.

It is an arithmetic number, because the mean of its divisors is an integer number (250476313500).

Almost surely, 2^{2001386280731} is an apocalyptic number.

2001386280731 is a deficient number, since it is larger than the sum of its proper divisors (2424227269).

2001386280731 is a wasteful number, since it uses less digits than its factorization.

2001386280731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492789.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 2001386280731 in words is "two trillion, one billion, three hundred eighty-six million, two hundred eighty thousand, seven hundred thirty-one".