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30103961 = 194573467
BaseRepresentation
bin111001011010…
…1100110011001
32002122102212112
41302311212121
530201311321
62553122105
7513610436
oct162654631
962572775
1030103961
1115aa1608
12a0b9335
1363103c4
143dd8b8d
152999a5b
hex1cb5999

30103961 has 8 divisors (see below), whose sum is σ = 31766880. Its totient is φ = 28448928.

The previous prime is 30103951. The next prime is 30103973. The reversal of 30103961 is 16930103.

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

It is a de Polignac number, because none of the positive numbers 2k-30103961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30103951) 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, 6950 + ... + 10416.

It is an arithmetic number, because the mean of its divisors is an integer number (3970860).

Almost surely, 230103961 is an apocalyptic number.

It is an amenable number.

30103961 is a deficient number, since it is larger than the sum of its proper divisors (1662919).

30103961 is a wasteful number, since it uses less digits than its factorization.

30103961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 30103961 is about 5486.7076648934. The cubic root of 30103961 is about 311.0817601231.

The spelling of 30103961 in words is "thirty million, one hundred three thousand, nine hundred sixty-one".

Divisors: 1 19 457 3467 8683 65873 1584419 30103961