30143235 has 16 divisors (see below), whose sum is σ = 48728736. Its totient is φ = 15909888.

The previous prime is 30143207. The next prime is 30143237. The reversal of 30143235 is 53234103.

It is not a de Polignac number, because 30143235 - 2¹⁵ = 30110467 is a prime.

It is a super-2 number, since 2×30143235² = 1817229232530450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30143237) 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, 8904 + ... + 11813.

It is an arithmetic number, because the mean of its divisors is an integer number (3045546).

Almost surely, 2^30143235 is an apocalyptic number.

30143235 is a deficient number, since it is larger than the sum of its proper divisors (18585501).

30143235 is a wasteful number, since it uses less digits than its factorization.

30143235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20822.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 30143235 is about 5490.2855117016. The cubic root of 30143235 is about 311.2169817074.

Adding to 30143235 its reverse (53234103), we get a palindrome (83377338).

The spelling of 30143235 in words is "thirty million, one hundred forty-three thousand, two hundred thirty-five".