30031138 has 8 divisors (see below), whose sum is σ = 45493020. Its totient is φ = 14866800.

The previous prime is 30031063. The next prime is 30031201. The reversal of 30031138 is 83113003.

It can be written as a sum of positive squares in 2 ways, for example, as 26656569 + 3374569 = 5163^2 + 1837^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74133 + ... + 74536.

Almost surely, 2^30031138 is an apocalyptic number.

30031138 is a deficient number, since it is larger than the sum of its proper divisors (15461882).

30031138 is a wasteful number, since it uses less digits than its factorization.

30031138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148772.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 30031138 is about 5480.0673353527. The cubic root of 30031138 is about 310.8307167628.

The spelling of 30031138 in words is "thirty million, thirty-one thousand, one hundred thirty-eight".