31321002323 has 8 divisors (see below), whose sum is σ = 33739118448. Its totient is φ = 28904144544.

The previous prime is 31321002313. The next prime is 31321002331. The reversal of 31321002323 is 32320012313.

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 31321002323 - 2¹² = 31320998227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31321002295 and 31321002304.

It is not an unprimeable number, because it can be changed into a prime (31321002313) 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, 262565 + ... + 362742.

It is an arithmetic number, because the mean of its divisors is an integer number (4217389806).

Almost surely, 2^31321002323 is an apocalyptic number.

31321002323 is a deficient number, since it is larger than the sum of its proper divisors (2418116125).

31321002323 is a wasteful number, since it uses less digits than its factorization.

31321002323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629173.

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

Adding to 31321002323 its reverse (32320012313), we get a palindrome (63641014636).

The spelling of 31321002323 in words is "thirty-one billion, three hundred twenty-one million, two thousand, three hundred twenty-three".