2001013213031 has 4 divisors (see below), whose sum is σ = 2286872243472. Its totient is φ = 1715154182592.

The previous prime is 2001013213027. The next prime is 2001013213091. The reversal of 2001013213031 is 1303123101002.

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 2001013213031 - 2² = 2001013213027 is a prime.

It is a super-4 number, since 4×2001013213031⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3, 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001013213091) 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, 142929515210 + ... + 142929515223.

It is an arithmetic number, because the mean of its divisors is an integer number (571718060868).

Almost surely, 2^{2001013213031} is an apocalyptic number.

2001013213031 is a deficient number, since it is larger than the sum of its proper divisors (285859030441).

2001013213031 is an equidigital number, since it uses as much as digits as its factorization.

2001013213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285859030440.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 2001013213031 its reverse (1303123101002), we get a palindrome (3304136314033).

The spelling of 2001013213031 in words is "two trillion, one billion, thirteen million, two hundred thirteen thousand, thirty-one".