31130023323 has 8 divisors (see below), whose sum is σ = 47436226048. Its totient is φ = 17788584744.

The previous prime is 31130023313. The next prime is 31130023373. The reversal of 31130023323 is 32332003113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31130023323 - 2⁴ = 31130023307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1482382063 = 31130023323 / (3 + 1 + 1 + 3 + 0 + 0 + 2 + 3 + 3 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31130023323.

It is not an unprimeable number, because it can be changed into a prime (31130023313) 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, 741191011 + ... + 741191052.

It is an arithmetic number, because the mean of its divisors is an integer number (5929528256).

Almost surely, 2^31130023323 is an apocalyptic number.

31130023323 is a deficient number, since it is larger than the sum of its proper divisors (16306202725).

31130023323 is a wasteful number, since it uses less digits than its factorization.

31130023323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482382073.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31130023323 its reverse (32332003113), we get a palindrome (63462026436).

The spelling of 31130023323 in words is "thirty-one billion, one hundred thirty million, twenty-three thousand, three hundred twenty-three".