31330134323 has 4 divisors (see below), whose sum is σ = 31330564320. Its totient is φ = 31329704328.

The previous prime is 31330134313. The next prime is 31330134331. The reversal of 31330134323 is 32343103313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31330134323 - 2²⁰ = 31329085747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31330134292 and 31330134301.

It is not an unprimeable number, because it can be changed into a prime (31330134313) 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, 75563 + ... + 261476.

It is an arithmetic number, because the mean of its divisors is an integer number (7832641080).

Almost surely, 2^31330134323 is an apocalyptic number.

31330134323 is a deficient number, since it is larger than the sum of its proper divisors (429997).

31330134323 is an equidigital number, since it uses as much as digits as its factorization.

31330134323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429996.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 31330134323 its reverse (32343103313), we get a palindrome (63673237636).

The spelling of 31330134323 in words is "thirty-one billion, three hundred thirty million, one hundred thirty-four thousand, three hundred twenty-three".