19740631223 has 2 divisors, whose sum is σ = 19740631224. Its totient is φ = 19740631222.

The previous prime is 19740631213. The next prime is 19740631249. The reversal of 19740631223 is 32213604791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19740631223 - 2⁸ = 19740630967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19740631213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9870315611 + 9870315612.

It is an arithmetic number, because the mean of its divisors is an integer number (9870315612).

Almost surely, 2^19740631223 is an apocalyptic number.

19740631223 is a deficient number, since it is larger than the sum of its proper divisors (1).

19740631223 is an equidigital number, since it uses as much as digits as its factorization.

19740631223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 19740631223 in words is "nineteen billion, seven hundred forty million, six hundred thirty-one thousand, two hundred twenty-three".