30898959961 has 3 divisors (see below), whose sum is σ = 30899135743. Its totient is φ = 30898784180.

The previous prime is 30898959953. The next prime is 30898959967. The reversal of 30898959961 is 16995989803.

The square root of 30898959961 is 175781.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 14561007561 + 16337952400 = 120669^2 + 127820^2 .

It is not a de Polignac number, because 30898959961 - 2³ = 30898959953 is a prime.

It is a super-3 number, since 3×30898959961³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30898959967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 87891 + ... + 263671.

Almost surely, 2^30898959961 is an apocalyptic number.

30898959961 is the 175781-st square number.

30898959961 is the 87891-st centered octagonal number.

It is an amenable number.

30898959961 is a deficient number, since it is larger than the sum of its proper divisors (175782).

30898959961 is an frugal number, since it uses more digits than its factorization.

30898959961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351562 (or 175781 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 67.

The spelling of 30898959961 in words is "thirty billion, eight hundred ninety-eight million, nine hundred fifty-nine thousand, nine hundred sixty-one".