1385217423 has 16 divisors (see below), whose sum is σ = 2118374400. Its totient is φ = 893688120.

The previous prime is 1385217419. The next prime is 1385217467. The reversal of 1385217423 is 3247125831.

1385217423 is a `hidden beast` number, since 13 + 8 + 5 + 217 + 423 = 666.

1385217423 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1385217423 - 2² = 1385217419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385217403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 826653 + ... + 828326.

It is an arithmetic number, because the mean of its divisors is an integer number (132398400).

Almost surely, 2^1385217423 is an apocalyptic number.

1385217423 is a deficient number, since it is larger than the sum of its proper divisors (733156977).

1385217423 is a wasteful number, since it uses less digits than its factorization.

1385217423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655019 (or 1655013 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1385217423 is about 37218.5091453164. The cubic root of 1385217423 is about 1114.7375958213.

The spelling of 1385217423 in words is "one billion, three hundred eighty-five million, two hundred seventeen thousand, four hundred twenty-three".