31240061635361 has 16 divisors (see below), whose sum is σ = 33181777137600. Its totient is φ = 29310028984320.

The previous prime is 31240061635337. The next prime is 31240061635403. The reversal of 31240061635361 is 16353616004213.

It is a cyclic number.

It is not a de Polignac number, because 31240061635361 - 2⁶ = 31240061635297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31240061635961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6451910 + ... + 10203296.

It is an arithmetic number, because the mean of its divisors is an integer number (2073861071100).

Almost surely, 2^{31240061635361} is an apocalyptic number.

It is an amenable number.

31240061635361 is a deficient number, since it is larger than the sum of its proper divisors (1941715502239).

31240061635361 is a wasteful number, since it uses less digits than its factorization.

31240061635361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752944.

The product of its (nonzero) digits is 233280, while the sum is 41.

Adding to 31240061635361 its reverse (16353616004213), we get a palindrome (47593677639574).

The spelling of 31240061635361 in words is "thirty-one trillion, two hundred forty billion, sixty-one million, six hundred thirty-five thousand, three hundred sixty-one".