2031001013 has 4 divisors (see below), whose sum is σ = 2031255648. Its totient is φ = 2030746380.

The previous prime is 2031001009. The next prime is 2031001097. The reversal of 2031001013 is 3101001302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2031001013 - 2² = 2031001009 is a prime.

It is a super-2 number, since 2×2031001013² = 8249930229614052338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2031000985 and 2031001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031201013) 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, 114953 + ... + 131438.

It is an arithmetic number, because the mean of its divisors is an integer number (507813912).

Almost surely, 2^2031001013 is an apocalyptic number.

It is an amenable number.

2031001013 is a deficient number, since it is larger than the sum of its proper divisors (254635).

2031001013 is an equidigital number, since it uses as much as digits as its factorization.

2031001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254634.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 2031001013 is about 45066.6285958912. The cubic root of 2031001013 is about 1266.3975062976.

Adding to 2031001013 its reverse (3101001302), we get a palindrome (5132002315).

The spelling of 2031001013 in words is "two billion, thirty-one million, one thousand, thirteen".