1223870143 has 2 divisors, whose sum is σ = 1223870144. Its totient is φ = 1223870142.

The previous prime is 1223870129. The next prime is 1223870147. The reversal of 1223870143 is 3410783221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223870143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223870147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611935071 + 611935072.

It is an arithmetic number, because the mean of its divisors is an integer number (611935072).

Almost surely, 2^1223870143 is an apocalyptic number.

1223870143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223870143 is an equidigital number, since it uses as much as digits as its factorization.

1223870143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1223870143 is about 34983.8554621986. The cubic root of 1223870143 is about 1069.6584180577.

The spelling of 1223870143 in words is "one billion, two hundred twenty-three million, eight hundred seventy thousand, one hundred forty-three".