30712130 has 32 divisors (see below), whose sum is σ = 58575744. Its totient is φ = 11569536.

The previous prime is 30712117. The next prime is 30712139. The reversal of 30712130 is 3121703.

It is a junction number, because it is equal to n+sod(n) for n = 30712099 and 30712108.

It is not an unprimeable number, because it can be changed into a prime (30712139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14414 + ... + 16406.

It is an arithmetic number, because the mean of its divisors is an integer number (1830492).

Almost surely, 2^30712130 is an apocalyptic number.

30712130 is a deficient number, since it is larger than the sum of its proper divisors (27863614).

30712130 is a wasteful number, since it uses less digits than its factorization.

30712130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 30712130 is about 5541.8525783352. The cubic root of 30712130 is about 313.1626642104.

Adding to 30712130 its reverse (3121703), we get a palindrome (33833833).

The spelling of 30712130 in words is "thirty million, seven hundred twelve thousand, one hundred thirty".