223172899423 has 2 divisors, whose sum is σ = 223172899424. Its totient is φ = 223172899422.

The previous prime is 223172899277. The next prime is 223172899427. The reversal of 223172899423 is 324998271322.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223172899423 - 2²¹ = 223170802271 is a prime.

It is a super-3 number, since 3×223172899423³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223172899427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111586449711 + 111586449712.

It is an arithmetic number, because the mean of its divisors is an integer number (111586449712).

Almost surely, 2^223172899423 is an apocalyptic number.

223172899423 is a deficient number, since it is larger than the sum of its proper divisors (1).

223172899423 is an equidigital number, since it uses as much as digits as its factorization.

223172899423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 52.

The spelling of 223172899423 in words is "two hundred twenty-three billion, one hundred seventy-two million, eight hundred ninety-nine thousand, four hundred twenty-three".