30801881 has 12 divisors (see below), whose sum is σ = 34275696. Its totient is φ = 27655320.

The previous prime is 30801877. The next prime is 30801887. The reversal of 30801881 is 18810803.

It is a happy number.

It is not a de Polignac number, because 30801881 - 2² = 30801877 is a prime.

It is a super-2 number, since 2×30801881² = 1897511746276322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30801887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8510 + ... + 11576.

It is an arithmetic number, because the mean of its divisors is an integer number (2856308).

Almost surely, 2^30801881 is an apocalyptic number.

It is an amenable number.

30801881 is a deficient number, since it is larger than the sum of its proper divisors (3473815).

30801881 is a wasteful number, since it uses less digits than its factorization.

30801881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172 (or 3161 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 30801881 is about 5549.9442339541. The cubic root of 30801881 is about 313.4674224894.

The spelling of 30801881 in words is "thirty million, eight hundred one thousand, eight hundred eighty-one".