31200212323 has 6 divisors (see below), whose sum is σ = 36294124596. Its totient is φ = 26743039092.

The previous prime is 31200212321. The next prime is 31200212347. The reversal of 31200212323 is 32321200213.

It is not a de Polignac number, because 31200212323 - 2¹ = 31200212321 is a prime.

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 31200212323.

It is not an unprimeable number, because it can be changed into a prime (31200212321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 318369465 + ... + 318369562.

It is an arithmetic number, because the mean of its divisors is an integer number (6049020766).

Almost surely, 2^31200212323 is an apocalyptic number.

31200212323 is a deficient number, since it is larger than the sum of its proper divisors (5093912273).

31200212323 is an equidigital number, since it uses as much as digits as its factorization.

31200212323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636739041 (or 636739034 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31200212323 its reverse (32321200213), we get a palindrome (63521412536).

The spelling of 31200212323 in words is "thirty-one billion, two hundred million, two hundred twelve thousand, three hundred twenty-three".