30312070 has 16 divisors (see below), whose sum is σ = 54866448. Its totient is φ = 12057120.

The previous prime is 30312053. The next prime is 30312077. The reversal of 30312070 is 7021303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30312077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6564 + ... + 10183.

It is an arithmetic number, because the mean of its divisors is an integer number (3429153).

Almost surely, 2^30312070 is an apocalyptic number.

30312070 is a deficient number, since it is larger than the sum of its proper divisors (24554378).

30312070 is a wasteful number, since it uses less digits than its factorization.

30312070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16935.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 30312070 is about 5505.6398356594. The cubic root of 30312070 is about 311.7969517670.

Adding to 30312070 its reverse (7021303), we get a palindrome (37333373).

The spelling of 30312070 in words is "thirty million, three hundred twelve thousand, seventy".