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30590650981 = 115215337751
BaseRepresentation
bin11100011111010110…
…000100101001100101
32220221220201002012101
4130133112010221211
51000122201312411
622015251452101
72132031146242
oct343726045145
986856632171
1030590650981
1111a78696940
125b188b7031
132b66869517
1416a2a7a5c9
15be08eb8c1
hex71f584a65

30590650981 has 8 divisors (see below), whose sum is σ = 33435678528. Its totient is φ = 27756300000.

The previous prime is 30590650967. The next prime is 30590651029. The reversal of 30590650981 is 18905609503.

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

It is not a de Polignac number, because 30590650981 - 227 = 30456433253 is a prime.

It is a super-2 number, since 2×305906509812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30590630981) 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, 2663145 + ... + 2674606.

It is an arithmetic number, because the mean of its divisors is an integer number (4179459816).

Almost surely, 230590650981 is an apocalyptic number.

It is an amenable number.

30590650981 is a deficient number, since it is larger than the sum of its proper divisors (2845027547).

30590650981 is a wasteful number, since it uses less digits than its factorization.

30590650981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5338283.

The product of its (nonzero) digits is 291600, while the sum is 46.

The spelling of 30590650981 in words is "thirty billion, five hundred ninety million, six hundred fifty thousand, nine hundred eighty-one".

Divisors: 1 11 521 5731 5337751 58715261 2780968271 30590650981