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30696901 = 89344909
BaseRepresentation
bin111010100011…
…0010111000101
32010202120020021
41311012113011
530324300101
63013535141
7521630224
oct165062705
963676207
1030696901
1116367044
12a3444b1
13648a261
144110cbb
152a655a1
hex1d465c5

30696901 has 4 divisors (see below), whose sum is σ = 31041900. Its totient is φ = 30351904.

The previous prime is 30696871. The next prime is 30696923. The reversal of 30696901 is 10969603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10969603 = 103106501.

It can be written as a sum of positive squares in 2 ways, for example, as 8850625 + 21846276 = 2975^2 + 4674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30696901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30696931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172366 + ... + 172543.

It is an arithmetic number, because the mean of its divisors is an integer number (7760475).

Almost surely, 230696901 is an apocalyptic number.

It is an amenable number.

30696901 is a deficient number, since it is larger than the sum of its proper divisors (344999).

30696901 is an equidigital number, since it uses as much as digits as its factorization.

30696901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344998.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 30696901 is about 5540.4784089463. The cubic root of 30696901 is about 313.1108937567.

The spelling of 30696901 in words is "thirty million, six hundred ninety-six thousand, nine hundred one".

Divisors: 1 89 344909 30696901