103970621 has 4 divisors (see below), whose sum is σ = 107324544. Its totient is φ = 100616700.

The previous prime is 103970617. The next prime is 103970651. The reversal of 103970621 is 126079301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126079301 = 10853 ⋅11617.

It is not a de Polignac number, because 103970621 - 2² = 103970617 is a prime.

It is a super-2 number, since 2×103970621² = 21619780062251282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103970651) 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, 1676915 + ... + 1676976.

It is an arithmetic number, because the mean of its divisors is an integer number (26831136).

Almost surely, 2^103970621 is an apocalyptic number.

It is an amenable number.

103970621 is a deficient number, since it is larger than the sum of its proper divisors (3353923).

103970621 is an equidigital number, since it uses as much as digits as its factorization.

103970621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353922.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 103970621 is about 10196.5985014612. The cubic root of 103970621 is about 470.2226514111. Note that the first 3 decimals are identical.

The spelling of 103970621 in words is "one hundred three million, nine hundred seventy thousand, six hundred twenty-one".