30551406981 has 8 divisors (see below), whose sum is σ = 40781450304. Its totient is φ = 20344484160.

The previous prime is 30551406971. The next prime is 30551407021. The reversal of 30551406981 is 18960415503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30551406981 - 2⁶ = 30551406917 is a prime.

It is a super-2 number, since 2×30551406981² (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 (30551406971) 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, 5777041 + ... + 5782326.

It is an arithmetic number, because the mean of its divisors is an integer number (5097681288).

Almost surely, 2^30551406981 is an apocalyptic number.

It is an amenable number.

30551406981 is a deficient number, since it is larger than the sum of its proper divisors (10230043323).

30551406981 is a wasteful number, since it uses less digits than its factorization.

30551406981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11560251.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 30551406981 in words is "thirty billion, five hundred fifty-one million, four hundred six thousand, nine hundred eighty-one".