30013973 has 4 divisors (see below), whose sum is σ = 32742528. Its totient is φ = 27285420.

The previous prime is 30013967. The next prime is 30013979. The reversal of 30013973 is 37931003.

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: 37931003 = 11 ⋅3448273.

It is an interprime number because it is at equal distance from previous prime (30013967) and next prime (30013979).

It is a cyclic number.

It is not a de Polignac number, because 30013973 - 2⁶ = 30013909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30013979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364261 + ... + 1364282.

It is an arithmetic number, because the mean of its divisors is an integer number (8185632).

Almost surely, 2^30013973 is an apocalyptic number.

It is an amenable number.

30013973 is a deficient number, since it is larger than the sum of its proper divisors (2728555).

30013973 is a wasteful number, since it uses less digits than its factorization.

30013973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728554.

The product of its (nonzero) digits is 1701, while the sum is 26.

The square root of 30013973 is about 5478.5009811079. The cubic root of 30013973 is about 310.7714846185.

Adding to 30013973 its reverse (37931003), we get a palindrome (67944976).

The spelling of 30013973 in words is "thirty million, thirteen thousand, nine hundred seventy-three".