20223423971 has 2 divisors, whose sum is σ = 20223423972. Its totient is φ = 20223423970.

The previous prime is 20223423967. The next prime is 20223423977. The reversal of 20223423971 is 17932432202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20223423971 - 2² = 20223423967 is a prime.

It is a super-2 number, since 2×20223423971² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20223423977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111711985 + 10111711986.

It is an arithmetic number, because the mean of its divisors is an integer number (10111711986).

Almost surely, 2^20223423971 is an apocalyptic number.

20223423971 is a deficient number, since it is larger than the sum of its proper divisors (1).

20223423971 is an equidigital number, since it uses as much as digits as its factorization.

20223423971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 20223423971 in words is "twenty billion, two hundred twenty-three million, four hundred twenty-three thousand, nine hundred seventy-one".