30145312 has 12 divisors (see below), whose sum is σ = 59348646. Its totient is φ = 15072640.

The previous prime is 30145303. The next prime is 30145321. The reversal of 30145312 is 21354103.

It is an interprime number because it is at equal distance from previous prime (30145303) and next prime (30145321).

It can be written as a sum of positive squares in only one way, i.e., 18284176 + 11861136 = 4276^2 + 3444^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30145312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470989 + ... + 471052.

Almost surely, 2^30145312 is an apocalyptic number.

30145312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30145312 is a deficient number, since it is larger than the sum of its proper divisors (29203334).

30145312 is an equidigital number, since it uses as much as digits as its factorization.

30145312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942051 (or 942043 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 30145312 is about 5490.4746607192. The cubic root of 30145312 is about 311.2241296111.

Adding to 30145312 its reverse (21354103), we get a palindrome (51499415).

The spelling of 30145312 in words is "thirty million, one hundred forty-five thousand, three hundred twelve".