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3100124221 = 16319019167
BaseRepresentation
bin1011100011001000…
…0010010000111101
322000001102121221121
42320302002100331
522322112433341
61231342230541
7136552423015
oct27062022075
98001377847
103100124221
111350a37237
12726285451
133a536c73c
14215a2ac45
151322704d1
hexb8c8243d

3100124221 has 4 divisors (see below), whose sum is σ = 3119143552. Its totient is φ = 3081104892.

The previous prime is 3100124213. The next prime is 3100124231. The reversal of 3100124221 is 1224210013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3100124221 - 23 = 3100124213 is a prime.

It is a super-2 number, since 2×31001242212 = 19221540371261713682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3100124195 and 3100124204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3100124231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9509421 + ... + 9509746.

It is an arithmetic number, because the mean of its divisors is an integer number (779785888).

Almost surely, 23100124221 is an apocalyptic number.

It is an amenable number.

3100124221 is a deficient number, since it is larger than the sum of its proper divisors (19019331).

3100124221 is a wasteful number, since it uses less digits than its factorization.

3100124221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19019330.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 3100124221 is about 55678.7591546363. The cubic root of 3100124221 is about 1458.1192115459.

Adding to 3100124221 its reverse (1224210013), we get a palindrome (4324334234).

The spelling of 3100124221 in words is "three billion, one hundred million, one hundred twenty-four thousand, two hundred twenty-one".

Divisors: 1 163 19019167 3100124221