30275097981 has 4 divisors (see below), whose sum is σ = 40366797312. Its totient is φ = 20183398652.

The previous prime is 30275097959. The next prime is 30275097991. The reversal of 30275097981 is 18979057203.

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 30275097981 - 2⁵ = 30275097949 is a prime.

It is a super-2 number, since 2×30275097981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30275097991) 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, 5045849661 + ... + 5045849666.

It is an arithmetic number, because the mean of its divisors is an integer number (10091699328).

Almost surely, 2^30275097981 is an apocalyptic number.

It is an amenable number.

30275097981 is a deficient number, since it is larger than the sum of its proper divisors (10091699331).

30275097981 is a wasteful number, since it uses less digits than its factorization.

30275097981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10091699330.

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 30275097981 in words is "thirty billion, two hundred seventy-five million, ninety-seven thousand, nine hundred eighty-one".