103138623 has 32 divisors (see below), whose sum is σ = 175462400. Its totient is φ = 58654368.

The previous prime is 103138619. The next prime is 103138627. The reversal of 103138623 is 326831301.

It is a happy number.

103138623 is a `hidden beast` number, since 1 + 0 + 3 + 1 + 38 + 623 = 666.

It is an interprime number because it is at equal distance from previous prime (103138619) and next prime (103138627).

It is not a de Polignac number, because 103138623 - 2² = 103138619 is a prime.

It is a super-2 number, since 2×103138623² = 21275151108672258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103138627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42090 + ... + 44472.

It is an arithmetic number, because the mean of its divisors is an integer number (5483200).

Almost surely, 2^103138623 is an apocalyptic number.

103138623 is a deficient number, since it is larger than the sum of its proper divisors (72323777).

103138623 is a wasteful number, since it uses less digits than its factorization.

103138623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628 (or 2622 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 103138623 is about 10155.7187337972. The cubic root of 103138623 is about 468.9650124002.

Adding to 103138623 its reverse (326831301), we get a palindrome (429969924).

The spelling of 103138623 in words is "one hundred three million, one hundred thirty-eight thousand, six hundred twenty-three".