103423640 has 64 divisors (see below), whose sum is σ = 246067200. Its totient is φ = 39042432.

The previous prime is 103423613. The next prime is 103423667. The reversal of 103423640 is 46324301.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (103423613) and next prime (103423667).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71969 + ... + 73391.

It is an arithmetic number, because the mean of its divisors is an integer number (3844800).

Almost surely, 2^103423640 is an apocalyptic number.

103423640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103423640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123033600).

103423640 is an abundant number, since it is smaller than the sum of its proper divisors (142643560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103423640 is a wasteful number, since it uses less digits than its factorization.

103423640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 103423640 is about 10169.7413929755. The cubic root of 103423640 is about 469.3966000463.

Adding to 103423640 its reverse (46324301), we get a palindrome (149747941).

The spelling of 103423640 in words is "one hundred three million, four hundred twenty-three thousand, six hundred forty".