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11312000431 = 353125925453
BaseRepresentation
bin10101000100011111…
…10110110110101111
31002012100112011100221
422202033312312233
5141131333003211
65110251232211
7550215263044
oct124217666657
932170464327
1011312000431
114885369396
122238448667
1310b37676a4
147944c91cb
1546316dc71
hex2a23f6daf

11312000431 has 8 divisors (see below), whose sum is σ = 11353502160. Its totient is φ = 11270552832.

The previous prime is 11312000387. The next prime is 11312000437. The reversal of 11312000431 is 13400021311.

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 11312000431 - 221 = 11309903279 is a prime.

It is a super-2 number, since 2×113120004312 (a number of 21 digits) 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 (11312000437) 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, 431701 + ... + 457153.

It is an arithmetic number, because the mean of its divisors is an integer number (1419187770).

Almost surely, 211312000431 is an apocalyptic number.

11312000431 is a deficient number, since it is larger than the sum of its proper divisors (41501729).

11312000431 is a wasteful number, since it uses less digits than its factorization.

11312000431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27065.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11312000431 its reverse (13400021311), we get a palindrome (24712021742).

The spelling of 11312000431 in words is "eleven billion, three hundred twelve million, four hundred thirty-one", and thus it is an aban number.

Divisors: 1 353 1259 25453 444427 8984909 32045327 11312000431