Search a number
-
+
31610312441 = 233617219881
BaseRepresentation
bin11101011100000111…
…110001011011111001
310000120222101020202122
4131130013301123321
51004214214444231
622304354411025
72166222136211
oct353407613371
9100528336678
1031610312441
1112451219664
126162290a75
132c99b9b9b6
14175c265241
15c501b377b
hex75c1f16f9

31610312441 has 8 divisors (see below), whose sum is σ = 31797575784. Its totient is φ = 31423490560.

The previous prime is 31610312429. The next prime is 31610312443. The reversal of 31610312441 is 14421301613.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 483120400 + 31127192041 = 21980^2 + 176429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31610312441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31610312441.

It is not an unprimeable number, because it can be changed into a prime (31610312443) 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, 33821 + ... + 253701.

It is an arithmetic number, because the mean of its divisors is an integer number (3974696973).

Almost surely, 231610312441 is an apocalyptic number.

It is an amenable number.

31610312441 is a deficient number, since it is larger than the sum of its proper divisors (187263343).

31610312441 is a wasteful number, since it uses less digits than its factorization.

31610312441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220731.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 31610312441 in words is "thirty-one billion, six hundred ten million, three hundred twelve thousand, four hundred forty-one".

Divisors: 1 233 617 143761 219881 51232273 135666577 31610312441