30561531156231 has 32 divisors (see below), whose sum is σ = 42230347876800. Its totient is φ = 19636090306560.

The previous prime is 30561531156227. The next prime is 30561531156259. The reversal of 30561531156231 is 13265113516503.

It is not a de Polignac number, because 30561531156231 - 2² = 30561531156227 is a prime.

It is a super-2 number, since 2×30561531156231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30561531156271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1080318535 + ... + 1080346823.

It is an arithmetic number, because the mean of its divisors is an integer number (1319698371150).

Almost surely, 2^{30561531156231} is an apocalyptic number.

30561531156231 is a deficient number, since it is larger than the sum of its proper divisors (11668816720569).

30561531156231 is a wasteful number, since it uses less digits than its factorization.

30561531156231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50419.

The product of its (nonzero) digits is 243000, while the sum is 42.

The spelling of 30561531156231 in words is "thirty trillion, five hundred sixty-one billion, five hundred thirty-one million, one hundred fifty-six thousand, two hundred thirty-one".