30561061431 has 16 divisors (see below), whose sum is σ = 40847436000. Its totient is φ = 20324425728.

The previous prime is 30561061411. The next prime is 30561061439. The reversal of 30561061431 is 13416016503.

It is not a de Polignac number, because 30561061431 - 2¹⁰ = 30561060407 is a prime.

It is a super-2 number, since 2×30561061431² (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 (30561061439) 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 15 ways as a sum of consecutive naturals, for example, 2224375 + ... + 2238071.

It is an arithmetic number, because the mean of its divisors is an integer number (2552964750).

Almost surely, 2^30561061431 is an apocalyptic number.

30561061431 is a deficient number, since it is larger than the sum of its proper divisors (10286374569).

30561061431 is a wasteful number, since it uses less digits than its factorization.

30561061431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15458.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 30561061431 its reverse (13416016503), we get a palindrome (43977077934).

The spelling of 30561061431 in words is "thirty billion, five hundred sixty-one million, sixty-one thousand, four hundred thirty-one".