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912030013 = 31139211657
BaseRepresentation
bin110110010111000…
…111100100111101
32100120010220222101
4312113013210331
53331434430023
6230255545101
731413061426
oct6627074475
92316126871
10912030013
114288a9714
1221552b191
13116c4923b
14891ac64d
15551061ad
hex365c793d

912030013 has 8 divisors (see below), whose sum is σ = 948227840. Its totient is φ = 876255840.

The previous prime is 912029981. The next prime is 912030023. The reversal of 912030013 is 310030219.

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 912030013 - 25 = 912029981 is a prime.

It is a super-2 number, since 2×9120300132 = 1663597489225560338, which 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 (912030023) 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, 101520 + ... + 110137.

It is an arithmetic number, because the mean of its divisors is an integer number (118528480).

Almost surely, 2912030013 is an apocalyptic number.

It is an amenable number.

912030013 is a deficient number, since it is larger than the sum of its proper divisors (36197827).

912030013 is a wasteful number, since it uses less digits than its factorization.

912030013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211827.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 912030013 is about 30199.8346518652. The cubic root of 912030013 is about 969.7721550090.

The spelling of 912030013 in words is "nine hundred twelve million, thirty thousand, thirteen".

Divisors: 1 31 139 4309 211657 6561367 29420323 912030013