30131255 has 32 divisors (see below), whose sum is σ = 45854208. Its totient is φ = 18460800.

The previous prime is 30131243. The next prime is 30131267. The reversal of 30131255 is 55213103.

It is an interprime number because it is at equal distance from previous prime (30131243) and next prime (30131267).

It is not a de Polignac number, because 30131255 - 2⁸ = 30130999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22844 + ... + 24126.

It is an arithmetic number, because the mean of its divisors is an integer number (1432944).

Almost surely, 2^30131255 is an apocalyptic number.

30131255 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30131255 is a deficient number, since it is larger than the sum of its proper divisors (15722953).

30131255 is a wasteful number, since it uses less digits than its factorization.

30131255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 30131255 is about 5489.1943853356. The cubic root of 30131255 is about 311.1757466566.

Adding to 30131255 its reverse (55213103), we get a palindrome (85344358).

The spelling of 30131255 in words is "thirty million, one hundred thirty-one thousand, two hundred fifty-five".