31116953645 has 8 divisors (see below), whose sum is σ = 37342715256. Its totient is φ = 24891982336.

The previous prime is 31116953603. The next prime is 31116953653. The reversal of 31116953645 is 54635961113.

It can be written as a sum of positive squares in 4 ways, for example, as 12142717636 + 18974236009 = 110194^2 + 137747^2 .

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 31116953645 - 2¹⁰ = 31116952621 is a prime.

It is a super-3 number, since 3×31116953645³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31116953596 and 31116953605.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 107192 + ... + 271521.

It is an arithmetic number, because the mean of its divisors is an integer number (4667839407).

Almost surely, 2^31116953645 is an apocalyptic number.

It is an amenable number.

31116953645 is a deficient number, since it is larger than the sum of its proper divisors (6225761611).

31116953645 is a wasteful number, since it uses less digits than its factorization.

31116953645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395151.

The product of its digits is 291600, while the sum is 44.

The spelling of 31116953645 in words is "thirty-one billion, one hundred sixteen million, nine hundred fifty-three thousand, six hundred forty-five".