30881235 has 32 divisors (see below), whose sum is σ = 61604352. Its totient is φ = 12833280.

The previous prime is 30881173. The next prime is 30881261. The reversal of 30881235 is 53218803.

It is a happy number.

It is not a de Polignac number, because 30881235 - 2⁷ = 30881107 is a prime.

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, 12214 + ... + 14523.

It is an arithmetic number, because the mean of its divisors is an integer number (1925136).

Almost surely, 2^30881235 is an apocalyptic number.

30881235 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30881235 is a deficient number, since it is larger than the sum of its proper divisors (30723117).

30881235 is a wasteful number, since it uses less digits than its factorization.

30881235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26763.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 30881235 is about 5557.0887162254. The cubic root of 30881235 is about 313.7363840168.

The spelling of 30881235 in words is "thirty million, eight hundred eighty-one thousand, two hundred thirty-five".