2031213313 has 8 divisors (see below), whose sum is σ = 2045050280. Its totient is φ = 2017405440.

The previous prime is 2031213299. The next prime is 2031213343. The reversal of 2031213313 is 3133121302.

It can be written as a sum of positive squares in 4 ways, for example, as 316590849 + 1714622464 = 17793^2 + 41408^2 .

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 2031213313 - 2⁵ = 2031213281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031213343) 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, 143281 + ... + 156817.

It is an arithmetic number, because the mean of its divisors is an integer number (255631285).

Almost surely, 2^2031213313 is an apocalyptic number.

It is an amenable number.

2031213313 is a deficient number, since it is larger than the sum of its proper divisors (13836967).

2031213313 is a wasteful number, since it uses less digits than its factorization.

2031213313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14547.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2031213313 is about 45068.9839357401. The cubic root of 2031213313 is about 1266.4416301593.

Adding to 2031213313 its reverse (3133121302), we get a palindrome (5164334615).

The spelling of 2031213313 in words is "two billion, thirty-one million, two hundred thirteen thousand, three hundred thirteen".