Search a number
-
+
30157313 = 196912297
BaseRepresentation
bin111001100001…
…0101000000001
32002202011001112
41303002220001
530210013223
62554213105
7514222124
oct163025001
962664045
1030157313
11160286aa
12a124195
13632b784
1440103bb
1529aa778
hex1cc2a01

30157313 has 8 divisors (see below), whose sum is σ = 31804320. Its totient is φ = 28516320.

The previous prime is 30157307. The next prime is 30157333. The reversal of 30157313 is 31375103.

It is a happy number.

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 30157313 - 24 = 30157297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30157333) 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, 11981 + ... + 14277.

It is an arithmetic number, because the mean of its divisors is an integer number (3975540).

Almost surely, 230157313 is an apocalyptic number.

It is an amenable number.

30157313 is a deficient number, since it is larger than the sum of its proper divisors (1647007).

30157313 is a wasteful number, since it uses less digits than its factorization.

30157313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 30157313 is about 5491.5674447283. The cubic root of 30157313 is about 311.2654240944.

The spelling of 30157313 in words is "thirty million, one hundred fifty-seven thousand, three hundred thirteen".

Divisors: 1 19 691 2297 13129 43643 1587227 30157313