30871132 has 6 divisors (see below), whose sum is σ = 54024488. Its totient is φ = 15435564.

The previous prime is 30871111. The next prime is 30871147. The reversal of 30871132 is 23117803.

It is a super-2 number, since 2×30871132² = 1906053581922848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30871097 and 30871106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3858888 + ... + 3858895.

Almost surely, 2^30871132 is an apocalyptic number.

It is an amenable number.

30871132 is a deficient number, since it is larger than the sum of its proper divisors (23153356).

30871132 is a wasteful number, since it uses less digits than its factorization.

30871132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7717787 (or 7717785 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 30871132 is about 5556.1796227264. The cubic root of 30871132 is about 313.7021666416.

Adding to 30871132 its reverse (23117803), we get a palindrome (53988935).

The spelling of 30871132 in words is "thirty million, eight hundred seventy-one thousand, one hundred thirty-two".