103213636 has 6 divisors (see below), whose sum is σ = 180623870. Its totient is φ = 51606816.

The previous prime is 103213633. The next prime is 103213661. The reversal of 103213636 is 636312301.

It can be written as a sum of positive squares in only one way, i.e., 102414400 + 799236 = 10120^2 + 894^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 103213636.

It is not an unprimeable number, because it can be changed into a prime (103213633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12901701 + ... + 12901708.

Almost surely, 2^103213636 is an apocalyptic number.

It is an amenable number.

103213636 is a deficient number, since it is larger than the sum of its proper divisors (77410234).

103213636 is a wasteful number, since it uses less digits than its factorization.

103213636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25803413 (or 25803411 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 103213636 is about 10159.4112034113. The cubic root of 103213636 is about 469.0786780230.

Adding to 103213636 its reverse (636312301), we get a palindrome (739525937).

The spelling of 103213636 in words is "one hundred three million, two hundred thirteen thousand, six hundred thirty-six".