103031906 has 4 divisors (see below), whose sum is σ = 154547862. Its totient is φ = 51515952.

The previous prime is 103031869. The next prime is 103031959. The reversal of 103031906 is 609130301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609130301 = 13 ⋅46856177.

It can be written as a sum of positive squares in only one way, i.e., 100500625 + 2531281 = 10025^2 + 1591^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25757975 + ... + 25757978.

Almost surely, 2^103031906 is an apocalyptic number.

103031906 is a deficient number, since it is larger than the sum of its proper divisors (51515956).

103031906 is an equidigital number, since it uses as much as digits as its factorization.

103031906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51515955.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 103031906 is about 10150.4633391782. The cubic root of 103031906 is about 468.8032113579.

The spelling of 103031906 in words is "one hundred three million, thirty-one thousand, nine hundred six".