30897901 has 4 divisors (see below), whose sum is σ = 32241312. Its totient is φ = 29554492.

The previous prime is 30897899. The next prime is 30897943. The reversal of 30897901 is 10979803.

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.

It is a cyclic number.

It is not a de Polignac number, because 30897901 - 2¹ = 30897899 is a prime.

It is a super-4 number, since 4×30897901⁴ (a number of 31 digits) contains 4444 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 (30897991) 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, 671671 + ... + 671716.

It is an arithmetic number, because the mean of its divisors is an integer number (8060328).

Almost surely, 2^30897901 is an apocalyptic number.

It is an amenable number.

30897901 is a deficient number, since it is larger than the sum of its proper divisors (1343411).

30897901 is a wasteful number, since it uses less digits than its factorization.

30897901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343410.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 30897901 is about 5558.5880401411. The cubic root of 30897901 is about 313.7928130018.

The spelling of 30897901 in words is "thirty million, eight hundred ninety-seven thousand, nine hundred one".