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30531338207 = 172398174891
BaseRepresentation
bin11100011011110011…
…110011111111011111
32220210210002200100222
4130123303303333133
51000012010310312
622005332311555
72130411043556
oct343363637737
986723080328
1030531338207
1111a48165317
125b00a725bb
132b574a02c6
141698c3ad9d
15bda5d2672
hex71bcf3fdf

30531338207 has 8 divisors (see below), whose sum is σ = 32329078992. Its totient is φ = 28733795200.

The previous prime is 30531338197. The next prime is 30531338213. The reversal of 30531338207 is 70283313503.

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 30531338207 - 26 = 30531338143 is a prime.

It is a super-2 number, since 2×305313382072 (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 (30531338107) 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, 370232 + ... + 445122.

It is an arithmetic number, because the mean of its divisors is an integer number (4041134874).

Almost surely, 230531338207 is an apocalyptic number.

30531338207 is a deficient number, since it is larger than the sum of its proper divisors (1797740785).

30531338207 is a wasteful number, since it uses less digits than its factorization.

30531338207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98889.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 30531338207 in words is "thirty billion, five hundred thirty-one million, three hundred thirty-eight thousand, two hundred seven".

Divisors: 1 17 23981 74891 407677 1273147 1795961071 30531338207