30340981 has 8 divisors (see below), whose sum is σ = 33170400. Its totient is φ = 27523440.

The previous prime is 30340969. The next prime is 30340987. The reversal of 30340981 is 18904303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30340981 - 2⁵ = 30340949 is a prime.

It is a super-2 number, since 2×30340981² = 1841150256084722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30340987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2890 + ... + 8308.

It is an arithmetic number, because the mean of its divisors is an integer number (4146300).

Almost surely, 2^30340981 is an apocalyptic number.

It is an amenable number.

30340981 is a deficient number, since it is larger than the sum of its proper divisors (2829419).

30340981 is a wasteful number, since it uses less digits than its factorization.

30340981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5939.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 30340981 is about 5508.2647902947. The cubic root of 30340981 is about 311.8960486756.

The spelling of 30340981 in words is "thirty million, three hundred forty thousand, nine hundred eighty-one".