1013323231 has 2 divisors, whose sum is σ = 1013323232. Its totient is φ = 1013323230.

The previous prime is 1013323229. The next prime is 1013323237. The reversal of 1013323231 is 1323233101.

It is a weak prime.

It is an emirp because it is prime and its reverse (1323233101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1013323231 - 2¹ = 1013323229 is a prime.

It is a super-4 number, since 4×1013323231⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 1013323229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1013323199 and 1013323208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1013323237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506661615 + 506661616.

It is an arithmetic number, because the mean of its divisors is an integer number (506661616).

Almost surely, 2^1013323231 is an apocalyptic number.

1013323231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013323231 is an equidigital number, since it uses as much as digits as its factorization.

1013323231 is an evil number, because the sum of its binary digits is even.

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

The square root of 1013323231 is about 31832.7383522059. The cubic root of 1013323231 is about 1004.4214985378.

Adding to 1013323231 its reverse (1323233101), we get a palindrome (2336556332).

The spelling of 1013323231 in words is "one billion, thirteen million, three hundred twenty-three thousand, two hundred thirty-one".