103311621 has 24 divisors (see below), whose sum is σ = 171550080. Its totient is φ = 58687776.

The previous prime is 103311619. The next prime is 103311629. The reversal of 103311621 is 126113301.

103311621 is a `hidden beast` number, since 1 + 0 + 33 + 11 + 621 = 666.

It is not a de Polignac number, because 103311621 - 2¹ = 103311619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103311594 and 103311603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103311629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6160 + ... + 15638.

It is an arithmetic number, because the mean of its divisors is an integer number (7147920).

Almost surely, 2^103311621 is an apocalyptic number.

It is an amenable number.

103311621 is a deficient number, since it is larger than the sum of its proper divisors (68238459).

103311621 is a wasteful number, since it uses less digits than its factorization.

103311621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9665 (or 9662 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 103311621 is about 10164.2324353588. The cubic root of 103311621 is about 469.2270697115.

Adding to 103311621 its reverse (126113301), we get a palindrome (229424922).

The spelling of 103311621 in words is "one hundred three million, three hundred eleven thousand, six hundred twenty-one".