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30344351 = 186716253
BaseRepresentation
bin111001111000…
…0010010011111
32010002122121212
41303300102133
530232004401
63002215035
7515631332
oct163602237
963078555
1030344351
1116146184
12a1b447b
13639594b
14405c619
1529e5dbb
hex1cf049f

30344351 has 4 divisors (see below), whose sum is σ = 30362472. Its totient is φ = 30326232.

The previous prime is 30344341. The next prime is 30344407. The reversal of 30344351 is 15344303.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30344351 - 214 = 30327967 is a prime.

It is a super-2 number, since 2×303443512 = 1841559275222402, 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 (30344341) 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, 6260 + ... + 9993.

It is an arithmetic number, because the mean of its divisors is an integer number (7590618).

Almost surely, 230344351 is an apocalyptic number.

30344351 is a deficient number, since it is larger than the sum of its proper divisors (18121).

30344351 is a wasteful number, since it uses less digits than its factorization.

30344351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18120.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 30344351 is about 5508.5706857587. The cubic root of 30344351 is about 311.9075957728.

Adding to 30344351 its reverse (15344303), we get a palindrome (45688654).

The spelling of 30344351 in words is "thirty million, three hundred forty-four thousand, three hundred fifty-one".

Divisors: 1 1867 16253 30344351