31023211323 has 8 divisors (see below), whose sum is σ = 44546149648. Its totient is φ = 19091206944.

The previous prime is 31023211321. The next prime is 31023211357. The reversal of 31023211323 is 32311232013.

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

It is not a de Polignac number, because 31023211323 - 2¹ = 31023211321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31023211323.

It is not an unprimeable number, because it can be changed into a prime (31023211321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397733440 + ... + 397733517.

It is an arithmetic number, because the mean of its divisors is an integer number (5568268706).

Almost surely, 2^31023211323 is an apocalyptic number.

31023211323 is a deficient number, since it is larger than the sum of its proper divisors (13522938325).

31023211323 is a wasteful number, since it uses less digits than its factorization.

31023211323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795466973.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31023211323 its reverse (32311232013), we get a palindrome (63334443336).

The spelling of 31023211323 in words is "thirty-one billion, twenty-three million, two hundred eleven thousand, three hundred twenty-three".