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30212003031 = 372775193743
BaseRepresentation
bin11100001000110001…
…101001010011010111
32212222112012202212020
4130020301221103113
5443333233044111
621513524024223
72116452534330
oct341061512327
985875182766
1030212003031
11118a3985051
125a31b32073
132b06292892
141668673287
15bbc554906
hex708c694d7

30212003031 has 16 divisors (see below), whose sum is σ = 46203546624. Its totient is φ = 17201673504.

The previous prime is 30212003023. The next prime is 30212003039. The reversal of 30212003031 is 13030021203.

It is an interprime number because it is at equal distance from previous prime (30212003023) and next prime (30212003039).

It is not a de Polignac number, because 30212003031 - 23 = 30212003023 is a prime.

It is a super-2 number, since 2×302120030312 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30212003031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30212003039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2591055 + ... + 2602688.

It is an arithmetic number, because the mean of its divisors is an integer number (2887721664).

Almost surely, 230212003031 is an apocalyptic number.

30212003031 is a deficient number, since it is larger than the sum of its proper divisors (15991543593).

30212003031 is a wasteful number, since it uses less digits than its factorization.

30212003031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194030.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 30212003031 its reverse (13030021203), we get a palindrome (43242024234).

The spelling of 30212003031 in words is "thirty billion, two hundred twelve million, three thousand, thirty-one".

Divisors: 1 3 7 21 277 831 1939 5817 5193743 15581229 36356201 109068603 1438666811 4316000433 10070667677 30212003031