31032313131233 has 8 divisors (see below), whose sum is σ = 31871379144552. Its totient is φ = 30193265794176.

The previous prime is 31032313131227. The next prime is 31032313131271. The reversal of 31032313131233 is 33213131323013.

It can be written as a sum of positive squares in 4 ways, for example, as 23703879407569 + 7328433723664 = 4868663^2 + 2707108^2 .

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 31032313131233 - 2⁴ = 31032313131217 is a prime.

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 = 31032313131196 and 31032313131205.

It is not an unprimeable number, because it can be changed into a prime (31032313131203) 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, 1267910 + ... + 7979487.

It is an arithmetic number, because the mean of its divisors is an integer number (3983922393069).

Almost surely, 2^{31032313131233} is an apocalyptic number.

It is an amenable number.

31032313131233 is a deficient number, since it is larger than the sum of its proper divisors (839066013319).

31032313131233 is an equidigital number, since it uses as much as digits as its factorization.

31032313131233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9338131.

The product of its (nonzero) digits is 8748, while the sum is 29.

Adding to 31032313131233 its reverse (33213131323013), we get a palindrome (64245444454246).

The spelling of 31032313131233 in words is "thirty-one trillion, thirty-two billion, three hundred thirteen million, one hundred thirty-one thousand, two hundred thirty-three".