30355131 has 4 divisors (see below), whose sum is σ = 40473512. Its totient is φ = 20236752.

The previous prime is 30355123. The next prime is 30355153. The reversal of 30355131 is 13155303.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30355131 - 2³ = 30355123 is a prime.

It is a super-2 number, since 2×30355131² = 1842867956054322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30355098 and 30355107.

It is not an unprimeable number, because it can be changed into a prime (30355111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5059186 + ... + 5059191.

It is an arithmetic number, because the mean of its divisors is an integer number (10118378).

Almost surely, 2^30355131 is an apocalyptic number.

30355131 is a deficient number, since it is larger than the sum of its proper divisors (10118381).

30355131 is a wasteful number, since it uses less digits than its factorization.

30355131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10118380.

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 30355131 is about 5509.5490741076. The cubic root of 30355131 is about 311.9445270377.

The spelling of 30355131 in words is "thirty million, three hundred fifty-five thousand, one hundred thirty-one".