31232001223 has 2 divisors, whose sum is σ = 31232001224. Its totient is φ = 31232001222.

The previous prime is 31232001181. The next prime is 31232001247. The reversal of 31232001223 is 32210023213.

It is a strong prime.

It is an emirp because it is prime and its reverse (32210023213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31232001223 - 2¹³ = 31231993031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31232001223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31232001253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616000611 + 15616000612.

It is an arithmetic number, because the mean of its divisors is an integer number (15616000612).

Almost surely, 2^31232001223 is an apocalyptic number.

31232001223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232001223 is an equidigital number, since it uses as much as digits as its factorization.

31232001223 is an evil number, because the sum of its binary digits is even.

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

Adding to 31232001223 its reverse (32210023213), we get a palindrome (63442024436).

The spelling of 31232001223 in words is "thirty-one billion, two hundred thirty-two million, one thousand, two hundred twenty-three".