163011623 has 16 divisors (see below), whose sum is σ = 176826240. Its totient is φ = 149700096.

The previous prime is 163011619. The next prime is 163011647. The reversal of 163011623 is 326110361.

It is a happy number.

It is not a de Polignac number, because 163011623 - 2² = 163011619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163011683) 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, 214961 + ... + 215717.

It is an arithmetic number, because the mean of its divisors is an integer number (11051640).

Almost surely, 2^163011623 is an apocalyptic number.

163011623 is a deficient number, since it is larger than the sum of its proper divisors (13814617).

163011623 is a wasteful number, since it uses less digits than its factorization.

With its successor (163011624) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1066).

163011623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 163011623 is about 12767.6005184999. The cubic root of 163011623 is about 546.2685407221.

Adding to 163011623 its reverse (326110361), we get a palindrome (489121984).

The spelling of 163011623 in words is "one hundred sixty-three million, eleven thousand, six hundred twenty-three".