30819134 has 4 divisors (see below), whose sum is σ = 46228704. Its totient is φ = 15409566.

The previous prime is 30819133. The next prime is 30819137. The reversal of 30819134 is 43191803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43191803 = 431 ⋅100213.

It is a junction number, because it is equal to n+sod(n) for n = 30819097 and 30819106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30819133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7704782 + ... + 7704785.

It is an arithmetic number, because the mean of its divisors is an integer number (11557176).

Almost surely, 2^30819134 is an apocalyptic number.

30819134 is a deficient number, since it is larger than the sum of its proper divisors (15409570).

30819134 is a wasteful number, since it uses less digits than its factorization.

30819134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15409569.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 30819134 is about 5551.4983562999. The cubic root of 30819134 is about 313.5259388723.

The spelling of 30819134 in words is "thirty million, eight hundred nineteen thousand, one hundred thirty-four".