30913421 has 8 divisors (see below), whose sum is σ = 38541504. Its totient is φ = 24088320.

The previous prime is 30913343. The next prime is 30913427. The reversal of 30913421 is 12431903.

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 30913421 - 2¹⁰ = 30912397 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 (30913427) 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, 200660 + ... + 200813.

It is an arithmetic number, because the mean of its divisors is an integer number (4817688).

Almost surely, 2^30913421 is an apocalyptic number.

It is an amenable number.

30913421 is a deficient number, since it is larger than the sum of its proper divisors (7628083).

30913421 is a wasteful number, since it uses less digits than its factorization.

30913421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401491.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30913421 is about 5559.9839028544. The cubic root of 30913421 is about 313.8453435310.

The spelling of 30913421 in words is "thirty million, nine hundred thirteen thousand, four hundred twenty-one".