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113215389 = 375391209
BaseRepresentation
bin1101011111110…
…00011110011101
321220000221022120
412233320132131
5212440343024
615122333153
72543213010
oct657703635
9256027276
10113215389
11589a8441
1231aba1b9
131a5bca71
1411071377
159e15479
hex6bf879d

113215389 has 8 divisors (see below), whose sum is σ = 172518720. Its totient is φ = 64694496.

The previous prime is 113215381. The next prime is 113215397. The reversal of 113215389 is 983512311.

It is an interprime number because it is at equal distance from previous prime (113215381) and next prime (113215397).

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

It is not a de Polignac number, because 113215389 - 23 = 113215381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113215381) 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, 2695584 + ... + 2695625.

It is an arithmetic number, because the mean of its divisors is an integer number (21564840).

Almost surely, 2113215389 is an apocalyptic number.

It is an amenable number.

113215389 is a deficient number, since it is larger than the sum of its proper divisors (59303331).

113215389 is an equidigital number, since it uses as much as digits as its factorization.

113215389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5391219.

The product of its digits is 6480, while the sum is 33.

The square root of 113215389 is about 10640.2720359961. The cubic root of 113215389 is about 483.7657909367.

The spelling of 113215389 in words is "one hundred thirteen million, two hundred fifteen thousand, three hundred eighty-nine".

Divisors: 1 3 7 21 5391209 16173627 37738463 113215389