30641481 has 24 divisors (see below), whose sum is σ = 48155016. Its totient is φ = 18662400.

The previous prime is 30641477. The next prime is 30641489. The reversal of 30641481 is 18414603.

It can be written as a sum of positive squares in 4 ways, for example, as 8173881 + 22467600 = 2859^2 + 4740^2 .

It is not a de Polignac number, because 30641481 - 2² = 30641477 is a prime.

It is a super-2 number, since 2×30641481² = 1877800715746722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30641489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10521 + ... + 13113.

It is an arithmetic number, because the mean of its divisors is an integer number (2006459).

Almost surely, 2^30641481 is an apocalyptic number.

It is an amenable number.

30641481 is a deficient number, since it is larger than the sum of its proper divisors (17513535).

30641481 is a wasteful number, since it uses less digits than its factorization.

30641481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713 (or 2710 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 30641481 is about 5535.4747763855. The cubic root of 30641481 is about 312.9223507397.

The spelling of 30641481 in words is "thirty million, six hundred forty-one thousand, four hundred eighty-one".