2031212013 has 4 divisors (see below), whose sum is σ = 2708282688. Its totient is φ = 1354141340.

The previous prime is 2031212009. The next prime is 2031212017. The reversal of 2031212013 is 3102121302.

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 an interprime number because it is at equal distance from previous prime (2031212009) and next prime (2031212017).

It is a cyclic number.

It is not a de Polignac number, because 2031212013 - 2² = 2031212009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2031211983 and 2031212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031212017) 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, 338535333 + ... + 338535338.

It is an arithmetic number, because the mean of its divisors is an integer number (677070672).

Almost surely, 2^2031212013 is an apocalyptic number.

It is an amenable number.

2031212013 is a deficient number, since it is larger than the sum of its proper divisors (677070675).

2031212013 is an equidigital number, since it uses as much as digits as its factorization.

2031212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677070674.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2031212013 is about 45068.9695134025. The cubic root of 2031212013 is about 1266.4413599801.

Adding to 2031212013 its reverse (3102121302), we get a palindrome (5133333315).

The spelling of 2031212013 in words is "two billion, thirty-one million, two hundred twelve thousand, thirteen".