30971234 has 12 divisors (see below), whose sum is σ = 54041814. Its totient is φ = 13273344.

The previous prime is 30971231. The next prime is 30971249. The reversal of 30971234 is 43217903.

It can be written as a sum of positive squares in only one way, i.e., 25472209 + 5499025 = 5047^2 + 2345^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30971197 and 30971206.

It is not an unprimeable number, because it can be changed into a prime (30971231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157919 + ... + 158114.

Almost surely, 2^30971234 is an apocalyptic number.

30971234 is a deficient number, since it is larger than the sum of its proper divisors (23070580).

30971234 is a wasteful number, since it uses less digits than its factorization.

30971234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316049 (or 316042 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 30971234 is about 5565.1805002174. The cubic root of 30971234 is about 314.0408685497.

The spelling of 30971234 in words is "thirty million, nine hundred seventy-one thousand, two hundred thirty-four".