30986240551 has 8 divisors (see below), whose sum is σ = 35413973024. Its totient is φ = 26558789760.

The previous prime is 30986240543. The next prime is 30986240567. The reversal of 30986240551 is 15504268903.

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 30986240551 - 2³ = 30986240543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30986240498 and 30986240507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30986240501) 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, 284731 + ... + 378211.

It is an arithmetic number, because the mean of its divisors is an integer number (4426746628).

Almost surely, 2^30986240551 is an apocalyptic number.

30986240551 is a deficient number, since it is larger than the sum of its proper divisors (4427732473).

30986240551 is an equidigital number, since it uses as much as digits as its factorization.

30986240551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140841.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 30986240551 in words is "thirty billion, nine hundred eighty-six million, two hundred forty thousand, five hundred fifty-one".