103640743 has 4 divisors (see below), whose sum is σ = 106168608. Its totient is φ = 101112880.

The previous prime is 103640731. The next prime is 103640749. The reversal of 103640743 is 347046301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347046301 = 7 ⋅49578043.

It is a cyclic number.

It is not a de Polignac number, because 103640743 - 2²¹ = 101543591 is a prime.

It is a super-3 number, since 3×103640743³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103640749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263871 + ... + 1263952.

It is an arithmetic number, because the mean of its divisors is an integer number (26542152).

Almost surely, 2^103640743 is an apocalyptic number.

103640743 is a deficient number, since it is larger than the sum of its proper divisors (2527865).

103640743 is an equidigital number, since it uses as much as digits as its factorization.

103640743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527864.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 103640743 is about 10180.4097658198. The cubic root of 103640743 is about 469.7248170328.

The spelling of 103640743 in words is "one hundred three million, six hundred forty thousand, seven hundred forty-three".