2231032313 has 4 divisors (see below), whose sum is σ = 2268846480. Its totient is φ = 2193218148.

The previous prime is 2231032303. The next prime is 2231032319. The reversal of 2231032313 is 3132301322.

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 2231032313 - 2⁶ = 2231032249 is a prime.

It is a super-3 number, since 3×2231032313³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2231032319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18906995 + ... + 18907112.

It is an arithmetic number, because the mean of its divisors is an integer number (567211620).

Almost surely, 2^2231032313 is an apocalyptic number.

It is an amenable number.

2231032313 is a deficient number, since it is larger than the sum of its proper divisors (37814167).

2231032313 is an equidigital number, since it uses as much as digits as its factorization.

2231032313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37814166.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2231032313 is about 47233.8047694657. The cubic root of 2231032313 is about 1306.6781233883.

Adding to 2231032313 its reverse (3132301322), we get a palindrome (5363333635).

The spelling of 2231032313 in words is "two billion, two hundred thirty-one million, thirty-two thousand, three hundred thirteen".