20003000031031 has 4 divisors (see below), whose sum is σ = 20135470230064. Its totient is φ = 19870529832000.

The previous prime is 20003000030929. The next prime is 20003000031041. The reversal of 20003000031031 is 13013000030002.

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 20003000031031 - 2¹⁵ = 20002999998263 is a prime.

It is a super-2 number, since 2×20003000031031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003000031041) 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, 66235099290 + ... + 66235099591.

It is an arithmetic number, because the mean of its divisors is an integer number (5033867557516).

Almost surely, 2^{20003000031031} is an apocalyptic number.

20003000031031 is a deficient number, since it is larger than the sum of its proper divisors (132470199033).

20003000031031 is a wasteful number, since it uses less digits than its factorization.

20003000031031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132470199032.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 20003000031031 its reverse (13013000030002), we get a palindrome (33016000061033).

The spelling of 20003000031031 in words is "twenty trillion, three billion, thirty-one thousand, thirty-one".