30750481 has 4 divisors (see below), whose sum is σ = 31742464. Its totient is φ = 29758500.

The previous prime is 30750463. The next prime is 30750487. The reversal of 30750481 is 18405703.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18405703 = 977 ⋅18839.

It is a cyclic number.

It is not a de Polignac number, because 30750481 - 2⁵ = 30750449 is a prime.

It is a super-2 number, since 2×30750481² = 1891184163462722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30750487) 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 3 ways as a sum of consecutive naturals, for example, 495945 + ... + 496006.

It is an arithmetic number, because the mean of its divisors is an integer number (7935616).

Almost surely, 2^30750481 is an apocalyptic number.

30750481 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30750481 is a deficient number, since it is larger than the sum of its proper divisors (991983).

30750481 is an equidigital number, since it uses as much as digits as its factorization.

30750481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991982.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30750481 is about 5545.3116233445. The cubic root of 30750481 is about 313.2929613242.

The spelling of 30750481 in words is "thirty million, seven hundred fifty thousand, four hundred eighty-one".