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11312457 = 313431673
BaseRepresentation
bin101011001001…
…110101001001
3210021201202220
4223021311021
510343444312
61042244253
7165103632
oct53116511
923251686
1011312457
116427242
123956689
132461080
141706889
15ed6c8c
hexac9d49

11312457 has 16 divisors (see below), whose sum is σ = 16305408. Its totient is φ = 6935040.

The previous prime is 11312453. The next prime is 11312471. The reversal of 11312457 is 75421311.

11312457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11312457 - 22 = 11312453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11312453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16473 + ... + 17145.

It is an arithmetic number, because the mean of its divisors is an integer number (1019088).

Almost surely, 211312457 is an apocalyptic number.

It is an amenable number.

11312457 is a deficient number, since it is larger than the sum of its proper divisors (4992951).

11312457 is a wasteful number, since it uses less digits than its factorization.

11312457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120.

The product of its digits is 840, while the sum is 24.

The square root of 11312457 is about 3363.3996194327. The cubic root of 11312457 is about 224.4841317283.

Adding to 11312457 its reverse (75421311), we get a palindrome (86733768).

The spelling of 11312457 in words is "eleven million, three hundred twelve thousand, four hundred fifty-seven".

Divisors: 1 3 13 39 431 673 1293 2019 5603 8749 16809 26247 290063 870189 3770819 11312457